{"product_id":"curt-4-way-trailer-wiring-harness-for-chevrolet-gmc-pickups-vehicle-side-55315-plug-and-play-with-dust-cover","title":"CURT 4-Way Trailer Wiring Harness for Chevrolet \u0026 GMC Pickups — Vehicle-Side 55315, Plug-and-Play with Dust Cover","description":"\u003cp\u003e\u003cstrong\u003eCURT 55315 is a vehicle-specific, plug-and-play 4-way trailer wiring harness that adds a standard 4-pin connector to compatible Chevrolet and GMC pickup trucks without cutting or splicing.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf your pickup lacks a factory trailer plug, the CURT 55315 T-connector provides a factory-style electrical hookup for tail lights, turn signals and brake lights so you can tow safely and legally. Designed to mate with the OEM taillight sockets on select GMC C1500, C2500, C3500 and K1500, K2500, K3500 models, this harness installs quickly using the vehicle's existing wiring and includes a dust cover for long-term protection.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this harness install and how long will it take?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward because the CURT 55315 is built to plug into your truck's factory taillight connectors — no cutting, splicing, or soldering required. Typical install time is short: many owners complete the job in 20–45 minutes using basic hand tools.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePlug-and-play T-connector design matches OEM sockets\u003c\/li\u003e\n  \u003cli\u003eNo wire modifications or vehicle wiring changes\u003c\/li\u003e\n  \u003cli\u003eIncludes mounting hardware and straightforward routing\u003c\/li\u003e\n  \u003cli\u003eQuick-release ergonomic connector tabs for easy hookup\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat trailer functions does the CURT 55315 provide?\u003c\/h3\u003e\n\u003cp\u003eThis harness supplies a standard 4-way flat trailer connector, delivering left\/right turn signals, running lights and brake lights from your vehicle to the trailer. It’s ideal for lightweight trailers, utility trailers, and many small boats or cargo trailers that use a 4-pin wiring configuration.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLeft and right turn signal transmission\u003c\/li\u003e\n  \u003cli\u003eBrake light output synchronized with vehicle brakes\u003c\/li\u003e\n  \u003cli\u003eTail\/running light power for nighttime visibility\u003c\/li\u003e\n  \u003cli\u003eCompatible with common 4-flat trailer plugs and adapters\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this fit my truck and what’s included in the kit?\u003c\/h3\u003e\n\u003cp\u003eThe CURT 55315 is vehicle-specific and engineered for select years of GMC C1500\/C2500\/C3500 and K1500\/K2500\/K3500 models — always verify compatibility with the application guide for exact fitment. The kit contains everything needed to establish a reliable trailer connection and protect the plug from weather when not in use.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eVehicle-matched OEM-compatible taillight connectors\u003c\/li\u003e\n  \u003cli\u003e4-way flat female socket with ergonomic grip tabs\u003c\/li\u003e\n  \u003cli\u003eRubber dust cover to keep contacts clean and dry\u003c\/li\u003e\n  \u003cli\u003eAll mounting and wiring components for a complete install\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow durable is the wiring for outdoor and towing use?\u003c\/h3\u003e\n\u003cp\u003eCURT designs this harness for long-term towing exposure with weather-resistant materials and a protective dust cap to keep the connector free of dirt and moisture. Proper routing and secure mounting help prevent abrasion and strain on the wiring during regular use.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eWeather-resistant connector housing and contacts\u003c\/li\u003e\n  \u003cli\u003eIncluded dust cover for protection when unplugged\u003c\/li\u003e\n  \u003cli\u003eRobust insulation and strain relief at connection points\u003c\/li\u003e\n  \u003cli\u003eOEM-style fit reduces stress and prevents chafing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? Drivers of compatible Chevrolet or GMC pickup trucks who need a fast, reliable way to add a standard 4-pin trailer connector without altering factory wiring will benefit most from the CURT 55315 harness. It’s ideal for weekend boaters, contractors using light trailers, and anyone who wants a neat, OEM-style towing connection that installs quickly and protects the vehicle’s original wiring.\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: Does this harness require cutting factory wires?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. The CURT 55315 is a plug-and-play T-connector that uses the vehicle's existing taillight sockets without cutting or splicing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can the 4-pin connector support boat trailer lighting?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The 4-way flat supplies tail, brake, and turn signals typically used by small boat and utility trailers.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"CURT","offers":[{"title":"Default Title","offer_id":48084643479710,"sku":"B0009FJ368","price":36.5,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/curt-55315-front-connector-view.jpg?v=1785861497","url":"https:\/\/northtrailauto.ca\/products\/curt-4-way-trailer-wiring-harness-for-chevrolet-gmc-pickups-vehicle-side-55315-plug-and-play-with-dust-cover","provider":"North Trail Auto","version":"1.0","type":"link"}