{"product_id":"opt7-uscar-7-pin-to-4-pin-trailer-harness-with-reverse-wire-compact-plug-in-adapter-weatherproof","title":"OPT7 USCAR 7-Pin to 4-Pin Trailer Harness with Reverse Wire — Compact Plug-in Adapter, Weatherproof","description":"\u003cp\u003e\u003cstrong\u003eThe OPT7 Easy Connect USCAR 7 Pin to 4 Pin Harness with Reverse Wire is a plug-and-play vehicle adapter that converts a USCAR 7-way socket into a functional 4-pin trailer connection including a dedicated reverse feed.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis compact harness lets you power trailer lighting and add a reverse light signal without cutting or splicing into factory wiring. Designed for a range of trucks and midsize pickups, the adapter provides a secure electrical path for running lights, turn signals, brake lights and reverse lamps when your vehicle has a USCAR 7-way socket but no factory 4-pin outlet.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this harness simplify trailer hookups?\u003c\/h3\u003e\n\u003cp\u003eIt removes the need to rewire or modify the vehicle by converting an existing 7-way USCAR socket to a conventional 4-pin trailer plug with a separate reverse wire. Installation is a simple plug-in process that takes seconds and keeps factory connectors intact.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePlugs directly into USCAR 7-way sockets — no splicing.\u003c\/li\u003e\n  \u003cli\u003eErgonomic tab for easier connect\/disconnect under load.\u003c\/li\u003e\n  \u003cli\u003eCompact design stores easily when not towing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich vehicle models are supported and which are not?\u003c\/h3\u003e\n\u003cp\u003eThe harness fits many trucks and midsize pickups built without a factory tow package, but it’s important to confirm the vehicle has a USCAR 7-way socket. It is compatible with multiple model years for Toyota, Ford (older F-series), Dodge, Chevy and GMC light-duty trucks and is explicitly not compatible with certain newer model-year vehicles.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible: 2007–2025 Toyota Tacoma\/Tundra, 2005–2014 Ford F150\/F250\/F350, various Dodge Ram and GM 1500\/2500\/3500 models, and 2005–2022 Chevy Colorado\/GMC Canyon.\u003c\/li\u003e\n  \u003cli\u003eNot compatible: 2015+ F-150, Ram, Silverado, Sierra and 2023+ Colorado\/Canyon models.\u003c\/li\u003e\n  \u003cli\u003eRequires a USCAR-style 7-way socket on the vehicle.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the key construction and weatherproofing features?\u003c\/h3\u003e\n\u003cp\u003eThe unit uses heavy-gauge pure copper conductors and a robust PVC jacket to maintain reliable conductivity and resist road and weather exposure. Terminals and the locking mechanism are corrosion-resistant, and a protective cap helps keep moisture and debris out of the connector.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e16-gauge pure copper wires for stable power delivery.\u003c\/li\u003e\n  \u003cli\u003eRust-resistant terminal construction and dual-mechanism security system.\u003c\/li\u003e\n  \u003cli\u003eWeatherproof protective cap and durable PVC outer jacket.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this work with aftermarket tailgate lighting?\u003c\/h3\u003e\n\u003cp\u003eYes — it was built to interface cleanly with aftermarket tailgate light bars and similar products without additional wiring. The included reverse wire supports tailgate lights that need a separate reverse signal for full functionality.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNo splicing required for most aftermarket light strips, including OPT7 Redline tailgate bars.\u003c\/li\u003e\n  \u003cli\u003eProvides ground, running, left\/right turn, brake and reverse signals.\u003c\/li\u003e\n  \u003cli\u003e30-day warranty coverage included for initial peace of mind.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The OPT7 Easy Connect harness is intended for truck owners who already have a USCAR 7-way socket and want a quick, non-invasive way to power a 4-pin trailer plug and reverse lamp. It’s ideal for people installing aftermarket tailgate lighting, towing small trailers, or needing a temporary 4-pin hookup without altering factory wiring. Confirm vehicle compatibility before purchase to ensure the harness matches your truck’s model year and tow-socket type.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do I need to splice my truck wiring to use this harness?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No — it plugs into a USCAR 7-way socket and provides a 4-pin output plus reverse without splicing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will this work with my 2018 F-150?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No — the harness is not compatible with 2015+ F-150 models. Check vehicle compatibility before buying.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"OPT7","offers":[{"title":"Default Title","offer_id":48086697672862,"sku":"B0CNFZ7TBH","price":64.97,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/opt7-easy-connect-front-view.jpg?v=1785902114","url":"https:\/\/northtrailauto.ca\/products\/opt7-uscar-7-pin-to-4-pin-trailer-harness-with-reverse-wire-compact-plug-in-adapter-weatherproof","provider":"North Trail Auto","version":"1.0","type":"link"}