{"product_id":"oyviny-trailer-wiring-adapter-uscar-7-pin-to-4-pin-for-jeep-chevy-gmc-plug-and-play-weather-resistant","title":"Oyviny trailer wiring adapter USCAR 7‑pin to 4‑pin for Jeep\/Chevy\/GMC — plug‑and‑play, weather‑resistant","description":"\u003cp\u003e\u003cstrong\u003eOyviny USCAR 7-pin to 4-pin trailer wiring harness converts a factory USCAR 7-way socket into a standard 4-way flat connector for trailer lights — plug-and-play when your vehicle has the factory tow package.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis harness is designed to plug directly into the USCAR 7-pin trailer socket found on many Jeep, Chevrolet, GMC, Dodge, and Nissan models and deliver a reliable 4-pin flat output for taillights, turn signals, and running lights. It avoids complex splicing or rewiring by using the vehicle’s factory tow wiring, but it requires that the vehicle be equipped and activated with the factory tow package and USCAR 7-pin connector. If your vehicle has the physical USCAR connector but no factory tow package activation, a dealer reprogram is necessary for the harness to work.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the harness make connecting a trailer easier?\u003c\/h3\u003e\n\u003cp\u003eThe Oyviny harness transforms the vehicle’s existing USCAR 7-way plug into a familiar 4-way flat output so standard trailers can be connected quickly. Installation is straightforward and reversible, minimizing vehicle modification.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePlug directly into the vehicle’s USCAR 7-pin socket—no cutting or splicing required.\u003c\/li\u003e\n  \u003cli\u003eProvides a standard 4-pin flat connector used by boats, utility trailers, and small campers.\u003c\/li\u003e\n  \u003cli\u003eQuick connect\/disconnect keeps setup time short at trailheads or ramps.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich vehicles is this wiring harness compatible with?\u003c\/h3\u003e\n\u003cp\u003eThis adapter is built to work with many model years that shipped with a USCAR 7-pin factory connector and tow package. Verify your vehicle’s connector type and factory tow option before ordering to ensure compatibility.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCommon fits: 2011–2021 Jeep Grand Cherokee; 2001–2013 Chevrolet Silverado; 2001–2007 GMC Sierra.\u003c\/li\u003e\n  \u003cli\u003eAlso compatible with selected Tahoe, Suburban, TrailBlazer, Dodge Durango, and Nissan Titan model years.\u003c\/li\u003e\n  \u003cli\u003eIf the USCAR plug exists but tow functions are inactive, dealer reprogramming may be required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the build features and durability details?\u003c\/h3\u003e\n\u003cp\u003eThe harness uses quality materials focused on reliable electrical performance and weather resistance to withstand routine towing conditions. Protective elements help prevent corrosion and mechanical wear where wires pass through exposed areas.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e16 AWG pure copper conductors for consistent electrical conductivity.\u003c\/li\u003e\n  \u003cli\u003eABS molded housing resists rust and retains a factory appearance.\u003c\/li\u003e\n  \u003cli\u003eRubber dust cap and heavy-duty wire loom protect contacts and wiring from moisture and abrasion.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this work with all trailers and lighting setups?\u003c\/h3\u003e\n\u003cp\u003eThe adapter supplies the standard four circuits required for most small trailers: running lights, brake lights, and left\/right turn signals. It does not add brake controller or auxiliary power circuits—those require separate wiring or adapters.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSupports standard 4-pin trailer lighting functions for utility, boat, ATV, and small camper trailers.\u003c\/li\u003e\n  \u003cli\u003eDoes not provide trailer brake or auxiliary 12V power—use additional adapters if those features are needed.\u003c\/li\u003e\n  \u003cli\u003eIdeal for owners who only need basic lighting compatibility from a USCAR-equipped tow vehicle.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The Oyviny USCAR 7-to-4 wiring harness is for vehicle owners who already have a factory-installed USCAR 7-pin trailer socket and an active tow package, and who want a simple, durable 4-pin flat connector for basic trailer lighting. It’s best for owners of compatible Jeeps, Chevrolets, GMCs, Dodges, and selected Nissans who want a plug-and-play solution without altering factory wiring. If your vehicle has the physical 7-pin connector but the tow features are not enabled, plan to have the system activated by a dealer before using this adapter.\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 a dealer reprogram to use this harness?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: If your vehicle has the USCAR 7-pin connector but the factory tow package isn’t activated, dealer reprogramming is required.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this adapter supply trailer brake power or auxiliary 12V?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No — it only converts USCAR 7-pin signals to a standard 4-pin lighting connector; brake or auxiliary power require separate wiring.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Oyviny","offers":[{"title":"Default Title","offer_id":48084489666718,"sku":"B0CNXBKZL1","price":31.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/oyviny-front-packaging-connector.jpg?v=1785857074","url":"https:\/\/northtrailauto.ca\/products\/oyviny-trailer-wiring-adapter-uscar-7-pin-to-4-pin-for-jeep-chevy-gmc-plug-and-play-weather-resistant","provider":"North Trail Auto","version":"1.0","type":"link"}