{"title":"Tuner Harness Plug Kit","description":"\u003cp\u003eFind tuner harnesses, plug kits, and connection components for diesel truck tuning setups. These application-sensitive parts help connect compatible devices and vehicle systems. Review the product fitment details and verify the truck, engine, existing tuner, and connector requirements before purchasing.\u003cbr\u003e\u003c\/p\u003e","products":[{"product_id":"2007-5-2009-6-7l-ram-cummins-tuner-harness-plugs","title":"2007.5-2009 6.7L Ram Cummins Tuner Harness Plugs","description":"\u003c!-- more --\u003e\n\u003ch4\u003eFITMENT\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e2007.5-2009 6.7L Dodge Ram Cummins 2500 3500 Turbo Diesel.\u003c\/li\u003e\n\u003cli\u003eNote: This is for pick up only; Does NOT fit Cab \u0026amp; Chassis trucks. \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eThe base kit does not include DEF tank plugs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eDESCRIPTION\u003c\/h4\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003cb\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"MsoNormal\"\u003eWhen installing aftermarket tuning or performance upgrades on your 6.7L Cummins, unused factory wiring connectors can be exposed to moisture, dirt, road salt, and engine heat. Over time, unprotected plugs may corrode and affect electrical reliability.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003eThe Tuner Harness Plug Kit provides durable weatherproof caps and dummy plugs to seal unused engine and exhaust harness connectors after modifications.Designed to protect factory wiring from contaminants while keeping your engine bay clean and organized.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e\u003cspan data-type=\"text\"\u003e\u003cspan data-type=\"leaf\"\u003eKey Features\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHeavy-Duty Automotive Plastic: Molded from heat-resistant, high-impact ABS polymer designed to withstand harsh under-hood operating conditions.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003ePrevents Corrosion \u0026amp; Short Circuits: Locks out moisture, dirt, road grime, and engine heat to protect expensive OEM wiring harnesses.\u003c\/li\u003e\n\u003cli\u003eComplete Harness Protection: Weatherproofs open wiring harness connectors left disconnected after installing aftermarket performance tunes.\u003c\/li\u003e\n\u003cli\u003eOEM-Style Snap Locks: Built with factory-grade locking tabs and internal rubber seals for a snug, vibration-resistant fit that won't vibrate loose.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFAQ\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why do I need harness plugs after installing performance upgrades?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: When factory components are removed or bypassed, some electrical connectors may no longer be used. Installing protective plugs helps keep those connectors sealed and prevents long-term exposure to harsh engine bay conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do these plugs clear Check Engine Lights on their own?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: No. These are physical protective weather caps. They do not contain electrical resistors or logic circuits to bypass ECM codes. You must have an aftermarket tuner installed to turn off diagnostic trouble codes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this with EGR\/DPF delete modifications?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes, In fact, this kit is specifically designed for vehicles undergoing \u003cspan style=\"text-decoration: underline;\"\u003e\u003cspan style=\"color: rgb(43, 0, 255); text-decoration: underline;\"\u003e\u003ca href=\"https:\/\/www..com\/products\/-2007-2009-6-7l-dodge-ram-cummins-4-exhaust-dpf-race-pipe-diesel-egr-delete-kit\" target=\"_blank\" title=\"EGR and DPF delete\" style=\"color: rgb(43, 0, 255); text-decoration: underline;\" rel=\"noopener\"\u003eEGR and DPF delete\u003c\/a\u003e\u003c\/span\u003e\u003c\/span\u003e. When removing factory emissions components, these plugs seal and shield the exposed, disconnected wiring connectors to keep them clean, dry, and protected against corrosion and short circuits.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do I need to install these before tuning my truck?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: No. These plugs are a protective accessory and can be installed before or after tuning. They are designed to protect unused connectors once factory components are no longer connected.\u003c\/p\u003e","brand":"True American Diesel","offers":[{"title":"Default Title","offer_id":47261110075580,"sku":"ER-0355","price":259.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/4101\/8044\/files\/1_80258023-843d-417d-bb6a-b5ad3e7f7724.png?v=1786464469"},{"product_id":"2008-2010-6-4l-ford-powerstroke-shibby-engineering-tuner-harness-plug-kit","title":"2008-2010 6.4L Ford Powerstroke Shibby Engineering Tuner Harness Plug Kit","description":"\u003c!-- more --\u003e\n\u003ch4\u003eFITMENT\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eFor 2008–2010 6.4L Ford Powerstroke models.Covers EGR \/ DPF Plugs.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eDESCRIPTION\u003c\/h4\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003cb\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cmeta charset=\"utf-8\"\u003eWhen performing EGR\/DPF deletes or installing custom tuning on 2008–2010 6.4L Ford trucks, several factory sensor connectors may no longer be used. Leaving these open connectors exposed to moisture, dirt, road salt, and engine bay conditions can lead to terminal corrosion and damaged wiring over time.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eThe Ford Harness Plug Kit provides a simple way to protect unused factory connectors after tuning or emissions modifications. Designed for commonly disconnected EGT, DPF pressure, EGR, and related sensor plugs, these weather-resistant caps help keep connectors clean, protected, and organized for a professional engine bay finish.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e\u003cspan data-type=\"text\"\u003e\u003cspan data-type=\"leaf\"\u003eKey Features\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHeat \u0026amp; Oil Resistant Construction: Made from durable automotive-grade materials designed to withstand engine bay heat cycles and harsh underbody conditions.\u003c\/li\u003e\n\u003cli\u003eHelps Prevent Electrical Corrosion: Shields exposed terminals from rain, road salt, pressure washing, and grime to help reduce corrosion and wiring issues.\u003c\/li\u003e\n\u003cli\u003eHarness Protection: Protects commonly disconnected factory sensor connectors after EGR\/DPF deletes or custom tuning by sealing them against moisture, dirt, and debris.\u003c\/li\u003e\n\u003cli\u003eOEM-Style Clean Finish: Direct-fit caps snap onto factory connectors, keeping unused harness plugs protected and giving your engine bay a clean, organized appearance.\u003c\/li\u003e\n\u003cli\u003eSimple Plug-and-Play Installation: No cutting, splicing, or tape required—simply install each cap onto the matching OEM connector for quick protection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFAQ\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the main purpose of this tuner harness plug kit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: When you install an EGR or DPF delete kit and flash a tuner on 6.4L Ford, several factory electrical connectors are unplugged. These dummy plugs snap onto those open harness ends to seal out water, dirt, and salt, preventing terminal corrosion and short circuits.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do these plugs eliminate Check Engine Lights (CEL) by themselves?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: No. These are protective mechanical weather caps, not active electrical simulators. You still require custom ECM delete tuning (such as SCT, H\u0026amp;S, or EZ LYNK) to turn off emissions DTC codes and prevent limp mode.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Which sensors are these protective caps designed to cover on a 6.4L Powerstroke?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: They fit the disconnected factory connectors under the hood and along the frame rail, including the EGR valve, EGR temperature sensors, EGT sensors, and DPF pressure differential sensors.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is any electrical tape or zip-tie required to keep these plugs in place?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: No. Each plug features a factory-style locking latch that snaps securely into the OEM harness connector housing, ensuring it won't vibrate loose even during extreme off-road driving.\u003c\/p\u003e","brand":"True American Diesel","offers":[{"title":"Default Title","offer_id":47261110239420,"sku":"ER-0319","price":259.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/4101\/8044\/files\/2_73b6b34d-26d1-4126-97a1-f1db0ae05965.jpg?v=1786464477"},{"product_id":"2009-5-2012-cummins-pickup-tuner-harness-plugs","title":"2009.5-2012 6.7L Ram Cummins Tuner Harness Plugs","description":"\u003c!-- more --\u003e\n\u003ch4\u003eFITMENT\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e2009.5-2012 6.7L Dodge Ram Cummins 2500 3500 Turbo Diesel.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eNote: This is for pick up only; Does NOT fit Cab \u0026amp; Chassis trucks. \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eThe base kit does not include DEF tank plugs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eDESCRIPTION\u003c\/h4\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003cb\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"MsoNormal\"\u003e\n\u003cmeta charset=\"utf-8\"\u003eWhen upgrading your 2009-2012 6.7L Cummins, unplugged factory wiring connectors are exposed to moisture, dirt, and engine heat, leading to corrosion and electrical failures over time.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003eLeaving open sensor sockets exposed to rain, mud, road salt, and engine heat leads to severe pin corrosion, short circuits, and damaged wiring harnesses.\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003eThe Tuner Harness Plug Kit high-impact plugs lock out moisture and dirt to protect your truck’s electrical system and maintain a clean, professional engine bay and chassis layout.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e\u003cspan data-type=\"text\"\u003e\u003cspan data-type=\"leaf\"\u003eKey Features\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHeavy-Duty Automotive Plastic: Molded from heat-resistant, high-impact ABS\/Nylon polymer designed to withstand harsh under-hood operating conditions.\u003c\/li\u003e\n\u003cli\u003ePrevents Corrosion \u0026amp; Short Circuits: Locks out moisture, dirt, road grime, and engine heat to protect expensive OEM wiring harnesses.\u003c\/li\u003e\n\u003cli\u003eComplete Harness Protection: Weatherproofs open wiring harness connectors left disconnected after installing aftermarket performance tunes.\u003c\/li\u003e\n\u003cli\u003eOEM-Style Snap Locks: Built with factory-grade locking tabs and internal rubber seals for a snug, vibration-resistant fit that won't vibrate loose.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFAQ\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why do I need tuner harness plugs on my 09.5-12 truck?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: After tuning or removing factory components, some OEM electrical connectors may no longer be used. These protective plugs help seal unused connectors from moisture, dirt, road debris, and corrosion.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this base kit include DEF tank plugs or SOTF (Shift-On-The-Fly) switch plugs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: No. This base kit includes all required caps for under-hood EGR and under-chassis exhaust sensors. It does not include DEF tank connection caps or SOTF switch wiring plugs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are these reusable?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes. The plugs can be removed and reinstalled if factory components need to be serviced or reconnected in the future.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do these plugs replace factory connectors?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: No. These are protective covers only and are installed onto existing factory connectors without cutting or modifying the wiring harness.\u003c\/p\u003e","brand":"True American Diesel","offers":[{"title":"Default Title","offer_id":47261111353532,"sku":"ER-0325","price":239.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/4101\/8044\/files\/1_c9bd6f14-5b8c-42d4-b94d-d6c7f33fb68e.png?v=1786464489"},{"product_id":"2011-2014-6-7l-ford-powerstroke-shibby-engineering-tuner-harness-plug-kit","title":"2011-2014 6.7L Ford Powerstroke Shibby Engineering Tuner Harness Plug Kit","description":"\u003c!-- more --\u003e\n\u003ch4\u003eFITMENT\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e2011–2014 6.7L Ford F-250 F-350 F-450 Super Duty V8 Diesel.\u003c\/li\u003e\n\u003cli\u003eThis kit is purely a hardware protection solution; it contains zero tuning software, electronics, or performance calibration files.\u003c\/li\u003e\n\u003cli\u003eNOT include the specialized DEF tank module caps or SOTF-specific custom sensor caps (available.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eDESCRIPTION\u003c\/h4\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003cb\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cmeta charset=\"utf-8\"\u003eWhen you upgrade your 2011–2014 Ford 6.7L Powerstroke with aftermarket performance parts (such as upgraded exhaust or EGR modification setups), several factory sensors under the hood and beneath the chassis are disconnected and left completely behind.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLeaving these expensive, live factory wiring harness connectors hanging open exposes them directly to road salt, mud, intense heat, and high pressure during truck washes. Over time, water and debris will creep into the open pins, leading to severe corrosion, short circuits in the vehicle's electrical system, and costly diagnostic headache bills at the shop.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003carticle class=\"4ever-article\"\u003e\u003cstrong\u003e\u003cspan data-type=\"text\"\u003e\u003cspan data-type=\"leaf\"\u003eKey Features\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/article\u003e\n\u003cul\u003e\n\u003cli\u003eHeavy-Duty Weatherproof Isolation: Engineered from premium, high-temperature ABS plastic and chemical-resistant rubber gaskets designed to withstand extreme engine bay temperatures and off-road vibrations.\u003c\/li\u003e\n\u003cli\u003eBlocks Contaminants: Delivers 100% resistance against moisture, dust, road grime, and salt spray to eliminate pin corrosion.\u003c\/li\u003e\n\u003cli\u003eProtects Engine Circuitry: Isolates live factory circuits from electrical interference, prevent faulty engine codes, and preserves your original harness for easy return to stock if needed.\u003c\/li\u003e\n\u003cli\u003eComplete Multi-Plug Coverage: Specifically bundled to cover all crucial unused factory connectors, including the EGR system plugs under the hood and the DPF\/exhaust temperature sensor connectors under the frame body.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFAQ\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can these caps be easily removed later if I want to return the truck to stock?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes, Because these caps utilize the exact OEM-style quick-release tabs, they snap onto the harness firmly but can be depressed and pulled off in seconds, leaving your factory wiring harness 100% undamaged and ready for factory sensors.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why can't I just use heavy-duty electrical tape to wrap the open plugs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Electrical tape degrades quickly under high engine heat, oil, and road salt. Once the adhesive melts, it traps moisture inside, accelerating pin corrosion faster than leaving it wide open. These custom caps create a permanent, airtight seal to keep water out.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will this kit fit my 2015 Ford 6.7L Powerstroke truck?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: No. Ford updated the electrical wiring system, pins counts, and connector shapes for the 6.7L Powerstroke starting in the 15 model year.This specific kit is meticulously pinned for 15–16 connector profiles only.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will this kit work on a Cab \u0026amp; Chassis (F-450\/F-550) truck?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes. It fits both standard pickups and chassis cab models. The under-hood EGR and core under-chassis exhaust plugs are identical. However, because chassis cabs feature different wheelbases and custom commercial frames, any non-factory auxiliary plugs added by aftermarket body builders will not be covered.\u003c\/p\u003e","brand":"True American Diesel","offers":[{"title":"Default Title","offer_id":47261111648444,"sku":"ER-0320","price":259.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/4101\/8044\/files\/1_42e2f96c-fcbe-4ee7-99fd-1b3e8d83f255.png?v=1786464495"},{"product_id":"2011-2016-6-6l-gm-chevy-duramax-lml-tuner-harness-plug-kit","title":"2011-2016 6.6L GM Chevy Duramax LML Tuner Harness Plug Kit","description":"\u003c!-- more --\u003e\n\u003ch4\u003eFITMENT\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e2011–2016 6.6L Chevy Silverado \u0026amp; GMC Sierra Duramax LML engines;\u003c\/li\u003e\n\u003cli\u003eNote: The base kit does not include DEF tank plugs, Does not include shift on the fly plugs (Available Separately).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eDESCRIPTION\u003c\/h4\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003cb\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cmeta charset=\"utf-8\"\u003eProtect your truck's expensive factory wiring investment. When upgrading your 2011–2016 GM Duramax 6.6L LML with custom tuning and off-road race configurations, several factory exhaust and engine sensors are disconnected, leaving vulnerable open plugs exposed to the elements.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eThe Tuner Harness Plug Kit provides a complete set of heavy-duty, weather-proof block-off plugs. They snap directly into your disconnected factory connectors, completely sealing out water, mud, salt, and debris to prevent short circuits and corrosion.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003carticle class=\"4ever-article\"\u003e\u003cstrong\u003e\u003cspan data-type=\"text\"\u003e\u003cspan data-type=\"leaf\"\u003eKey Features\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/article\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cmeta charset=\"utf-8\"\u003eWeatherproof Seal: Molded with high-grade automotive silicone\/rubber seals to form an airtight barrier against high-pressure car washes, mud, and road salt.\u003c\/li\u003e\n\u003cli\u003ePreserves Factory Wiring: Keeps factory harness pins clean, dry, and corrosion-free. If you ever need to return the truck back to its stock configuration, the original connectors will plug right back in flawlessly.\u003c\/li\u003e\n\u003cli\u003eOEM-Style Snap Locking: Designed to the exact dimensions of GM’s factory plugs. They click securely into place and will not vibrate loose under heavy towing or rough terrain.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFAQ\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this kit block off the exhaust pipes or the wiring harness?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Electrical Protection Only: This kit strictly caps off the open plastic electrical connectors hanging under the chassis and in the engine bay after sensors are removed. It does not block mechanical exhaust piping or EGR metal ports.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are these plugs affected by the high heat underneath the truck?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: No, they are built for extreme automotive heat. Molded from high-impact, heat-stabilized composite with premium silicone gaskets, these plugs easily withstand the harsh ambient temperatures radiated by aftermarket exhaust pipes and engine components.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What specific plugs are included in this kit, and which locations do they protect?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: This kit completely seals the 4 major disconnected areas on your LML Duramax: It includes EGT plugs for the 4 frame rail sensors, NOx plugs for the chassis modules, DEF plugs for the main tank harness, and EGR\/9th injector plugs for the open connectors under the hood.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are these plugs labeled for easy installation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: They are shaped to only fit their matching factory connectors.You don't need labels because each plug is keyed differently. If a plug doesn't effortlessly snap into a specific factory socket, it belongs to a different connector in the kit.\u003c\/p\u003e","brand":"True American Diesel","offers":[{"title":"Default Title","offer_id":47261111746748,"sku":"ER-0329","price":259.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/4101\/8044\/files\/1_ced03a89-4f9a-4547-a47b-b6903d163e77.png?v=1786464507"},{"product_id":"2013-2015-6-7l-ram-cummins-tuner-harness-plug-kit","title":"2013-2015 6.7L Ram Cummins Tuner Harness Plug Kit","description":"\u003c!-- more --\u003e\n\u003ch4\u003eFITMENT\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e2013-2015 6.7L Dodge Ram Cummins 2500 3500 Turbo Diesel.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eNote: This is for pick up only; Does NOT fit Cab \u0026amp; Chassis trucks. \u003c\/li\u003e\n\u003cli\u003eThe base kit does not include DEF tank plugs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eDESCRIPTION\u003c\/h4\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003cb\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"MsoNormal\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cmeta charset=\"utf-8\"\u003eWhen installing aftermarket tuning or deleting emissions hardware on a 2013–2015 6.7L Cummins, multiple underhood and chassis electrical connectors are left unplugged and exposed.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003eLeaving open sensor sockets exposed to rain, mud, road salt, and engine heat leads to severe pin corrosion, short circuits, and damaged wiring harnesses.\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003eThe Tuner Harness Plug Kit high-impact plugs lock out moisture and dirt to protect your truck’s electrical system and maintain a clean, professional engine bay and chassis layout.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e\u003cspan data-type=\"text\"\u003e\u003cspan data-type=\"leaf\"\u003eKey Features\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHeavy-Duty Automotive Plastic: Molded from heat-resistant, high-impact ABS polymer designed to withstand harsh under-hood operating conditions.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003ePrevents Corrosion \u0026amp; Short Circuits: Locks out moisture, dirt, road grime, and engine heat to protect expensive OEM wiring harnesses.\u003c\/li\u003e\n\u003cli\u003eComplete Harness Protection: Weatherproofs open wiring harness connectors left disconnected after installing aftermarket performance tunes.\u003c\/li\u003e\n\u003cli\u003eOEM-Style Snap Locks: Built with factory-grade locking tabs and internal rubber seals for a snug, vibration-resistant fit that won't vibrate loose.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFAQ\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why do I need harness plugs after installing a tuner or delete kit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: After removing or bypassing factory components, some OEM connectors may no longer be used. These protective plugs help keep connectors sealed and protected in harsh engine bay conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this kit include DEF tank plugs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: No. This base harness plug kit does not include DEF tank harness plugs. Separate DEF plug kits may be required depending on your modification setup\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are these compatible with Cab \u0026amp; Chassis models?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: This kit is designed for 13-15 Ram pickup trucks. Cab \u0026amp; Chassis models may use different wiring configurations, so connector compatibility should be confirmed before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I reuse these plugs if I return my truck to stock?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes. The plugs can be removed if factory components need to be reinstalled or serviced.\u003c\/p\u003e","brand":"True American Diesel","offers":[{"title":"Default Title","offer_id":47261111877820,"sku":"ER-0326","price":259.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/4101\/8044\/files\/1_31b3cc2d-1787-42cc-b1c6-5b1bbb45cabb.png?v=1786464513"},{"product_id":"2015-2016-6-7l-ford-powerstroke-shibby-engineering-tuner-harness-plug-kit","title":"2015-2016 6.7L Ford Powerstroke Shibby Engineering Tuner Harness Plug Kit","description":"\u003c!-- more --\u003e\n\u003ch4\u003eFITMENT\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e2015–2016 6.7L Ford F-250 F-350 F-450 Super Duty V8 Diesel.\u003c\/li\u003e\n\u003cli\u003eThis base kit covers the primary EGR and Exhaust\/DPF plugs. It does NOT include the specialized DEF tank module plugs, CCV caps, or SOTF custom sensor caps (available separately).\u003c\/li\u003e\n\u003cli\u003eNOT include the specialized DEF tank module caps or SOTF-specific custom sensor caps (available.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eDESCRIPTION\u003c\/h4\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003cb\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cmeta charset=\"utf-8\"\u003eWhen you optimize your 2015–2016 Ford 6.7L Powerstroke with aftermarket custom tunes and hardware upgrades (such as racing exhaust or intake configurations), multiple factory sensor lines under the hood and beneath the chassis are disconnected and left exposed.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLeaving these expensive, live factory wiring harness connectors hanging open exposes them directly to road salt, mud, intense weather, and high-pressure undercarriage washes. Over time, water and debris will creep into the open pins, leading to severe corrosion, short circuits in the vehicle's electrical system, and costly diagnostic bills.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003carticle class=\"4ever-article\"\u003e\u003cstrong\u003e\u003cspan data-type=\"text\"\u003e\u003cspan data-type=\"leaf\"\u003eKey Features\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/article\u003e\n\u003cul\u003e\n\u003cli\u003eBlocks Contaminants: Delivers 100% resistance against moisture, dust, road grime, and winter salt spray to eliminate pin corrosion.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHeavy-Duty Weatherproof Isolation: Built to extreme automotive standards. These plugs withstand severe under-hood heat, heavy chassis vibration, and constant moisture without warping or slipping.\u003c\/li\u003e\n\u003cli\u003eComplete Multi-Plug Coverage: Specifically bundled to cover all crucial unused factory connectors, including the engine-bay EGR system plugs and the under-frame DPF\/exhaust temperature sensor connectors.\u003c\/li\u003e\n\u003cli\u003eProtects Engine Circuitry: Isolates live factory circuits from electrical interference, prevents faulty ground-loop engine codes, and preserves your original harness for a clean return-to-stock layout later.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFAQ\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do I need to clean the factory connectors before installing the plugs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes. We recommend cleaning the factory connectors with an electronics contact cleaner if they have been exposed to dirt or moisture. Allow the connectors to dry completely before installing the weatherproof plugs to help ensure a secure connection and long-term protection.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will installing these plugs trigger a Check Engine Light (CEL)?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: No. These plugs are passive weatherproof connector caps with no electronics or resistors. When installed correctly on a properly calibrated vehicle, they do not cause a Check Engine Light or diagnostic trouble codes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do these plugs contain resistors or electronic components?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: No. These are passive weatherproof connector caps with no electronics, resistors, or simulators inside.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What should I do if a warning light appears after installation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: First, verify that every plug is installed in the correct location and fully seated. If the issue persists, check for existing diagnostic trouble codes and confirm your vehicle's calibration matches the installed hardware.\u003c\/p\u003e","brand":"True American Diesel","offers":[{"title":"Default Title","offer_id":47261112139964,"sku":"ER-0321","price":259.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/4101\/8044\/files\/1_4f7e07b2-0145-4aff-b808-e8cefa40f850.png?v=1786464524"},{"product_id":"2016-2018-6-7l-ram-cummins-tuner-harness-plug-kit","title":"2016-2018 6.7L Ram Cummins Tuner Harness Plug Kit","description":"\u003c!-- more --\u003e\n\u003ch4\u003eFITMENT\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e2016-2018 6.7L Dodge Ram Cummins 2500 3500 Turbo Diesel.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eNote: This is for pick up only; Does NOT fit Cab \u0026amp; Chassis trucks. \u003c\/li\u003e\n\u003cli\u003eThe base kit does not include DEF tank plugs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eDESCRIPTION\u003c\/h4\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003cb\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"MsoNormal\"\u003eWhen installing aftermarket tuning or deleting factory emissions hardware on a 2016–2018 6.7L Cummins, multiple underhood and chassis electrical connectors are left unplugged and exposed.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003eLeaving open sensor sockets exposed to rain, mud, road salt, and engine heat leads to severe pin corrosion, short circuits, and damaged wiring harnesses.\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003eThe Tuner Harness Plug Kit high-impact plugs lock out moisture and dirt to protect your truck’s electrical system and maintain a clean, professional engine bay and chassis layout.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e\u003cspan data-type=\"text\"\u003e\u003cspan data-type=\"leaf\"\u003eKey Features\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHeavy-Duty Automotive Plastic: Molded from heat-resistant, high-impact ABS polymer designed to withstand harsh under-hood operating conditions.\u003c\/li\u003e\n\u003cli\u003eEliminates Electrical Interference: Protects exposed pin terminals to prevent short circuits, signal noise, and phantom fault codes.\u003c\/li\u003e\n\u003cli\u003eFactory-Style Locking Snap Interfaces: Precision-molded tabs align perfectly with original OEM plugs for a snug, vibration-proof seal.\u003c\/li\u003e\n\u003cli\u003eComplete Harness Protection: Weatherproofs open wiring harness connectors left disconnected after installing aftermarket performance tunes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFAQ\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is a Tuner Harness Plug Kit used for?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: This kit seals unused factory wiring connectors after tuning or aftermarket modifications. It helps protect exposed connectors from moisture, dirt, road debris, and corrosion.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do I need these if my tuner already disables the factory components?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes. Tuning may disable electronic functions, but unused physical connectors are still exposed to the environment. These plugs provide additional protection for the factory wiring.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will installing these affect future maintenance?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: No. The plugs are removable and allow easy access to the original connectors if factory components need to be serviced or reinstalled.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are these plugs heat resistant for engine bay use?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes. These harness plugs are designed to withstand typical engine bay conditions, including heat, vibration, and exposure to road contaminants, helping protect unused factory connectors during daily driving and heavy-duty use.\u003c\/p\u003e","brand":"True American Diesel","offers":[{"title":"Default Title","offer_id":47261113352380,"sku":"ER-0327","price":259.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/4101\/8044\/files\/1-1_c8f29fdc-a02e-4dce-9c19-f7da44d5a177.jpg?v=1786464540"},{"product_id":"2017-2019-6-7l-ford-powerstroke-shibby-engineering-tuner-harness-plug-kit","title":"2017-2019 6.7L Ford Powerstroke Shibby Engineering Tuner Harness Plug Kit","description":"\u003c!-- more --\u003e\n\u003ch4\u003eFITMENT\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cmeta charset=\"utf-8\"\u003e2017–2019 6.7L Ford F-250 F-350 F-450 Super Duty V8 Diesel.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eThis kit is purely a hardware protection solution; it contains zero tuning software, electronics, or performance calibration files.\u003c\/li\u003e\n\u003cli\u003eThis base kit covers the primary EGR and Exhaust\/DPF plugs. It does NOT include the specialized DEF tank module plugs, Crankcase Ventilation (CCV) caps, or SOTF custom sensor caps (available separately).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eDESCRIPTION\u003c\/h4\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003cb\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cmeta charset=\"utf-8\"\u003eWhen you optimize your 2017–2019 Ford 6.7L Powerstroke with aftermarket custom tunes and hardware upgrades (such as high-flow exhaust or performance intake systems), multiple factory sensor lines under the hood and beneath the chassis are disconnected and left exposed.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLeaving these expensive, live factory wiring harness connectors hanging open exposes them directly to road salt, mud, intense weather, and high-pressure undercarriage washes. Over time, water and debris will creep into the open pins, leading to severe corrosion, short circuits in the vehicle's electrical system, and costly diagnostic bills.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003carticle class=\"4ever-article\"\u003e\u003cstrong\u003e\u003cspan data-type=\"text\"\u003e\u003cspan data-type=\"leaf\"\u003eKey Features\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/article\u003e\n\u003cul\u003e\n\u003cli\u003eBlocks Contaminants: Delivers 100% resistance against moisture, dust, road grime, and winter salt spray to eliminate pin corrosion.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHeavy-Duty Weatherproof Isolation: Built to extreme automotive standards. These plugs withstand severe under-hood heat, heavy chassis vibration, and constant moisture without warping or slipping.\u003c\/li\u003e\n\u003cli\u003eComplete Multi-Plug Coverage: Specifically bundled to cover all crucial unused factory connectors, including the engine-bay EGR system plugs and the under-frame DPF\/exhaust temperature sensor connectors.\u003c\/li\u003e\n\u003cli\u003eProtects Engine Circuitry: Isolates live factory circuits from electrical interference, prevents faulty ground-loop engine codes, and preserves your original harness for a clean return-to-stock layout later.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFAQ\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are the DEF tank plugs or CCV upgrade plugs included in this base kit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: No. This is a base kit covering the standard primary EGR and DPF\/Exhaust system plugs. Auxiliary caps, such as the large DEF tank module plug or the specialized CCV upgrade plug, are sold separately.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this kit if I only modify the EGR but leave the DPF intact?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes, While this is a comprehensive, all-in-one bundle, the plugs are completely independent. You can use only the engine-bay EGR caps now and save the under-chassis DPF\/exhaust caps in your toolbox for future upgrades.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this plug kit replace the need for an EGR block-off plate?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: No. This kit only protects and seals the electrical connectors\/wiring harness. It does not physically block or block off the exhaust passages. You will still need a mechanical EGR bypass or block-off plate kit to physically stop the exhaust gases from routing back into your intake.\u003cmeta charset=\"utf-8\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What physical EGR and DPF hardware upgrades do you recommend pairing with this plug kit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: To complete your performance setup, pair this harness kit with a mechanical \u003cspan style=\"text-decoration: underline;\"\u003e\u003cspan style=\"color: rgb(43, 0, 255); text-decoration: underline;\"\u003e\u003ca rel=\"noopener\" style=\"color: rgb(43, 0, 255); text-decoration: underline;\" title=\"EGR and Exhaust System\" href=\"https:\/\/www..com\/products\/-2011-2023-6-7l-ford-4-cat-dpf-delete-pipe-exhaust-egr-cooler-delete-kit\" target=\"_blank\"\u003eEGR and Exhaust System\u003c\/a\u003e\u003c\/span\u003e\u003c\/span\u003e. These caps serve as the final step to seal and protect the electrical connections left behind by those physical upgrades.\u003c\/p\u003e","brand":"True American Diesel","offers":[{"title":"Default Title","offer_id":47261113385148,"sku":"ER-0322","price":259.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/4101\/8044\/files\/1_cacd1e7e-21b3-4c48-bb91-c095bd87075f.png?v=1786464543"},{"product_id":"2017-2023-6-6l-gm-chevy-duramax-l5p-tuner-harness-plug-kit","title":"2017-2023 6.6L GM Chevy Duramax L5P Tuner Harness Plug Kit","description":"\u003c!-- more --\u003e\n\u003ch4\u003eFITMENT\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e2017–2023 6.6L Chevy Silverado \u0026amp; GMC Sierra Duramax L5P engines;\u003c\/li\u003e\n\u003cli\u003eNote: The base kit does not include DEF tank plugs, Does not include shift on the fly plugs (Available Separately).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eDESCRIPTION\u003c\/h4\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003cb\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cmeta charset=\"utf-8\"\u003eDefend your truck’s next-generation electronics from the elements. When configuring your 17–23 Duramax L5P with custom tuning, several factory emission and exhaust sensors are disconnected, leaving fragile open terminals vulnerable to catastrophic corrosion.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eThe L5P Tuner Harness Plug Kit delivers a complete set of precision-molded weatherproof caps. Specially designed for the L5P's complex harness geometry, these plugs seal out water, mud, salt, and grime to keep your factory wiring safe and dry.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003carticle class=\"4ever-article\"\u003e\u003cstrong\u003e\u003cspan data-type=\"text\"\u003e\u003cspan data-type=\"leaf\"\u003eKey Features\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/article\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cmeta charset=\"utf-8\"\u003eMaterial Composition: High-temp automotive grade ABS \u0026amp; premium silicone internal seals.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eWaterproof \u0026amp; Anti-Corrosion: Armed with heavy-duty internal silicone gaskets that block out high-pressure car washes, road de-icing salts, and deep mud pits.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eL5P-Specific Precision Molding: Unlike generic kits, every plug is engineered to mirror the exact terminal patterns of the  factory harness for an airtight fit.\u003c\/li\u003e\n\u003cli\u003eOEM-Style Snap Locking: Built-in locking tabs securely click directly into the factory wire harness clips, ensuring they won’t shake or vibrate loose on rough terrain.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFAQ\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this kit fit the newer 2024+ refreshed Duramax L5P?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: No, this kit is strictly for 2017–2023 model years. GM updated the ECM architecture and wiring harness configurations for the 2024+ refreshed trucks. \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do these plugs contain resistors to turn off dashboard trouble codes?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: No, these are passive protective caps. They contain no electronics or resistors. To prevent Check Engine Lights or limp modes, your truck must be running a custom multi-map or delete tune flashed into the ECM.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why does the L5P kit look different from the older LMM or LML kits?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: \u003cmeta charset=\"utf-8\"\u003eGM completely redesigned the Duramax wiring harness for 2017+, adopting new sensor layouts and plug geometries. This kit features exclusive, precision-molded connector shapes that match the updated L5P terminals, which older kits cannot fit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I accidentally force a plug into the wrong factory connector?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: \u003cmeta charset=\"utf-8\"\u003eNo, thanks to the built-in OEM-style \"keyway\" design. Each plug features unique alignment slots that act as a mechanical lock, meaning they will only slide into and click with their exact factory counterpart, making a mistaken installation virtually impossible.\u003c\/p\u003e","brand":"True American Diesel","offers":[{"title":"Default Title","offer_id":47261113417916,"sku":"ER-0330","price":279.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/4101\/8044\/files\/1_8516f31c-f962-4333-bf74-682fc4bcc1ea.png?v=1786464545"},{"product_id":"2019-2024-6-7l-ram-cummins-tuner-harness-plug-kit","title":"2019-2024 6.7L Ram Cummins Tuner Harness Plug Kit","description":"\u003c!-- more --\u003e\n\u003ch4\u003eFITMENT\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e2019-2024 6.7L Dodge Ram Cummins 2500 3500 Turbo Diesel.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eNote: This is for pick up only; Does NOT fit Cab \u0026amp; Chassis trucks. \u003c\/li\u003e\n\u003cli\u003eDoes NOT include DEF tank harness components or SOTF tuning caps.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eDESCRIPTION\u003c\/h4\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003cb\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"MsoNormal\"\u003eWhen installing performance upgrades or custom tuning on 2019+ Ram 6.7L Cummins trucks, factory emissions modifications can leave unused electrical connectors exposed to harsh conditions.\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003eMoisture, mud, road salt, and engine heat can cause connector corrosion over time, potentially affecting wiring reliability and electrical connections.\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003eThe Harness Plug Kit provides precision-molded, weather-resistant caps to seal unused factory connectors throughout the truck. It helps protect wiring from contaminants while maintaining a clean, professional OEM-style appearance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e\u003cspan data-type=\"text\"\u003e\u003cspan data-type=\"leaf\"\u003eKey Features\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-Temp Polymeric Material: Molded from automotive-grade, heat-resistant polymer designed to withstand severe under-hood and exhaust bay heat cycles.\u003c\/li\u003e\n\u003cli\u003eWatertight Weatherproof Seal: High-grade internal rubber gaskets lock out rain, road salt, mud, and dust to eliminate pin corrosion.\u003c\/li\u003e\n\u003cli\u003eVibration-Proof Snap Locks: Engineered with factory-style locking tabs that click securely into place, ensuring they will not vibrate loose on or off-road.\u003c\/li\u003e\n\u003cli\u003eNon-Destructive Installation: Tool-free, plug-and-play installation—no wire cutting, soldering, or messy electrical tape required. Fully reversible back to stock.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFAQ\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is a Tuner Harness Plug Kit used for?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: After modifying factory emissions components or installing custom tuning, some OEM connectors may no longer be used. These protective plugs help keep connectors sealed and maintain long-term wiring reliability.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are these plugs heat resistant?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes. These plugs are designed for demanding diesel truck environments and help protect unused connectors exposed to engine heat, vibration, moisture, and road debris.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do these plugs affect ECU operation or tuning?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: No. These are protective caps only. They do not modify ECU signals, change tuning parameters, or affect engine calibration.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will these stop check engine lights?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: No. These plugs do not disable sensors, clear diagnostic codes, or change ECU programming. They only protect unused electrical connectors.\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003eQ: Why not just remove the unused connectors completely?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Factory connectors are part of the vehicle’s original wiring harness. Removing them requires permanent wiring modifications and can make future servicing more difficult. These plugs provide a simple, reversible way to protect unused connections.\u003c\/p\u003e","brand":"True American Diesel","offers":[{"title":"Default Title","offer_id":47261113778364,"sku":"ER-0328","price":271.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/4101\/8044\/files\/1_b04675f0-5f76-4d45-8a84-5bcabe60decb.png?v=1786464558"},{"product_id":"2020-2022-6-7l-ford-powerstroke-shibby-engineering-tuner-harness-plug-kit","title":"2020-2022 6.7L Ford Powerstroke Shibby Engineering Tuner Harness Plug Kit","description":"\u003c!-- more --\u003e\n\u003ch4\u003eFITMENT\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e2020–2022 6.7L Ford F-250 F-350 F-450 Super Duty V8 Diesel.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eThis kit is purely a hardware protection solution; it contains zero tuning software, electronics, or performance calibration files.\u003c\/li\u003e\n\u003cli\u003eThis base kit covers the primary EGR and Exhaust\/DPF plugs. It does NOT include the specialized DEF tank module plugs, CCV caps, or SOTF custom sensor caps (available separately).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eDESCRIPTION\u003c\/h4\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003cb\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cmeta charset=\"utf-8\"\u003eWhen you optimize your 2020–2022 Ford 6.7L Powerstroke with aftermarket custom tunes and hardware upgrades (such as high-flow exhaust or performance intake systems), multiple factory sensor lines under the hood and beneath the chassis are disconnected and left exposed.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLeaving these expensive, live factory wiring harness connectors hanging open exposes them directly to road salt, mud, intense weather, and high-pressure undercarriage washes. Over time, water and debris will creep into the open pins, leading to severe corrosion, short circuits in the vehicle's electrical system, and costly diagnostic bills.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003carticle class=\"4ever-article\"\u003e\u003cstrong\u003e\u003cspan data-type=\"text\"\u003e\u003cspan data-type=\"leaf\"\u003eKey Features\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/article\u003e\n\u003cul\u003e\n\u003cli\u003eBlocks Contaminants: Delivers 100% resistance against moisture, dust, road grime, and winter salt spray to eliminate pin corrosion.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHeavy-Duty Weatherproof Isolation: Built to extreme automotive standards. These plugs withstand severe under-hood heat, heavy chassis vibration, and constant moisture without warping or slipping.\u003c\/li\u003e\n\u003cli\u003eComplete Multi-Plug Coverage: Specifically bundled to cover all crucial unused factory connectors, including the engine-bay EGR system plugs and the under-frame DPF\/exhaust temperature sensor connectors.\u003c\/li\u003e\n\u003cli\u003eProtects Engine Circuitry: Isolates live factory circuits from electrical interference, prevents faulty ground-loop engine codes, and preserves your original harness for a clean return-to-stock layout later.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFAQ\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do I need to grease these plugs during installation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: While our caps feature premium built-in rubber seals, we highly recommend applying a small dab of dielectric grease to the metal pins of your truck's open female plugs before snapping the caps on. This provides an extra barrier against moisture and corrosion over years of driving.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Which connectors are covered by this kit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: This base kit includes the primary weatherproof plugs for the factory EGR and exhaust system harness connectors commonly left exposed after emissions-related component removal. DEF tank plugs and Shift-On-The-Fly (SOTF) plugs are not included.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I install this kit without removing the entire wiring harness?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes. Your factory harness stays fully in place. Simply unplug the sensors (EGR, DPF, etc.) and snap these caps directly onto the open connectors—no unrouting, cutting, or removal required.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this kit include instructions on which plug goes where?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes, but setup is extremely intuitive. Because every factory connector on your 6.7L has a unique shape and keyway, our caps are precision-molded to only fit their exact matching plug. If it clicks and locks into place smoothly, you know you have the right match—you physically cannot plug them into the wrong spots.\u003c\/p\u003e","brand":"True American Diesel","offers":[{"title":"Default Title","offer_id":47261114040508,"sku":"ER-0323","price":259.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/4101\/8044\/files\/1_a098ef11-9a65-480f-a423-7d0525374b73.png?v=1786464572"},{"product_id":"2023-2025-6-7l-ford-powerstroke-shibby-engineering-tuner-harness-plug-kit","title":"2023-2025 6.7L Ford Powerstroke Shibby Engineering Tuner Harness Plug Kit","description":"\u003c!-- more --\u003e\n\u003ch4\u003eFITMENT\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e2023–2025 6.7L Ford F-250 F-350 F-450 Super Duty V8 Diesel.\u003c\/li\u003e\n\u003cli\u003eThis kit is purely a hardware protection solution; it contains zero tuning software, electronics, or performance calibration files.\u003c\/li\u003e\n\u003cli\u003eThis base kit covers the primary EGR and Exhaust\/DPF plugs. It does NOT include the specialized DEF tank module plugs, CCV caps, or SOTF custom sensor caps (available separately).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eDESCRIPTION\u003c\/h4\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003cb\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cmeta charset=\"utf-8\"\u003eWhen you optimize your 2023-2025 Ford 6.7L Powerstroke with aftermarket custom tunes and hardware upgrades, multiple factory sensor lines under the hood and beneath the chassis are disconnected and left exposed.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLeaving these expensive, live factory wiring harness connectors hanging open exposes them directly to road salt, mud, extreme weather, and high-pressure undercarriage washes. Over time, water and debris will creep into the open pins, leading to severe corrosion, short circuits in the vehicle's electrical system, and costly diagnostic bills.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003carticle class=\"4ever-article\"\u003e\u003cstrong\u003e\u003cspan data-type=\"text\"\u003e\u003cspan data-type=\"leaf\"\u003eKey Features\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/article\u003e\n\u003cul\u003e\n\u003cli\u003eBlocks Contaminants: Delivers 100% resistance against moisture, dust, road grime, and winter salt spray to eliminate pin corrosion.\u003c\/li\u003e\n\u003cli\u003eHeavy-Duty Weatherproof Isolation: Built to extreme automotive standards. These plugs withstand severe under-hood heat, heavy chassis vibration, and constant moisture without warping or slipping.\u003c\/li\u003e\n\u003cli\u003eComplete Multi-Plug Coverage: Specifically bundled to cover all crucial unused factory connectors, including the engine-bay EGR system plugs and the under-frame DPF\/exhaust temperature sensor connectors.\u003c\/li\u003e\n\u003cli\u003eProtects Engine Circuitry: Isolates live factory circuits from electrical interference, prevents faulty ground-loop engine codes, and preserves your original harness for a clean return-to-stock layout later.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFAQ\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will this kit fit my 2022 or older Ford 6.7L Powerstroke truck?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: No. Ford updated the electrical wiring system, pins counts, and connector shapes for the 6.7L Powerstroke starting in the 2023 model year. This kit is built strictly for 23-25 connector profiles.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will installing these caps void my 2023+ factory vehicle warranty?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: No. These caps are passive hardware components with no electrical signals, so they cannot void your warranty. However, the physical modifications (like removing the DPF\/EGR) and custom tuning required prior to using these caps will typically affect your factory powertrain warranty.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are these caps safe against high-pressure undercarriage automatic truck washes?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes. They are specifically designed to survive commercial car washes. The internal automotive-grade rubber gaskets lock tightly onto the OEM connector ridges, ensuring high-pressure water jets will not dislodge the caps or blast moisture into the pins.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this kit conflict with the Ford digital instrument cluster or SYNC system?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: No. These plugs are passive weatherproof connector caps and do not communicate with the vehicle's electronic systems. When used on a properly calibrated vehicle, they do not interfere with the digital instrument cluster or SYNC system.\u003c\/p\u003e","brand":"True American Diesel","offers":[{"title":"Default Title","offer_id":47261114302652,"sku":"ER-0324","price":279.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/4101\/8044\/files\/1-1_0376870d-5de0-4105-8663-143983cca8d2.jpg?v=1786464578"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/4101\/8044\/collections\/tuner-harness-plug-kits.png?v=1789249775","url":"https:\/\/trueamericandiesel.com\/collections\/tuner-harness-plug-kit.oembed?page=3","provider":"TrueAmericanDiesel","version":"1.0","type":"link"}