{"product_id":"yunnergo-flat-trailer-harness-plug-kit-for-silverado-2001-2019-pre-wired-7-way-4-way-with-mounting-bracket","title":"Yunnergo Flat Trailer Harness Plug Kit for Silverado 2001–2019 — Pre-wired 7‑way \u0026 4‑way with Mounting Bracket","description":"\u003cp\u003e\u003cstrong\u003eYunnergo's Flat Trailer Harness Plug Kit (Part 55774) is a pre-wired 7-way and 4-way connector set with mounting bracket and hardware designed to restore trailer lighting and towing connections on compatible GM trucks and vans.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis wiring kit supplies both a 7-way multi-tow connector and a 4-way flat plug in one package, assembled to reduce installation time and avoid cutting into factory wiring. Built with reinforced ABS housings and a protective outer layer, the harness is made for everyday towing use. It fits a range of Chevrolet and GMC vehicles from the early 2000s through 2019 — check the vehicle list below before purchasing to ensure fitment.\u003c\/p\u003e\n\n\u003ch3\u003eWhich vehicles does this plug kit fit?\u003c\/h3\u003e\n\u003cp\u003eThe kit is intended for specific Chevrolet and GMC models across several model years. It covers many Silverado, Avalanche, Express, Suburban and Colorado variants listed by year and trim; compatibility depends on the factory socket and bumper location. Always compare the part picture and vehicle year to avoid ordering the wrong item.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSilverado 1500\/2500\/3500\/2500HD: 2001–2019\u003c\/li\u003e\n  \u003cli\u003eAvalanche 1500: 2002–2006\u003c\/li\u003e\n  \u003cli\u003eExpress 2500: 2008–2017\u003c\/li\u003e\n  \u003cli\u003eSuburban 1500: 2000–2014\u003c\/li\u003e\n  \u003cli\u003eColorado: 2008–2019\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is the installation and what’s included?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward because the harness arrives pre-assembled and plugs into the vehicle's existing socket without splicing. The package contains the 7-way connector, the 4-way flat plug, a mounting bracket and the necessary screws and nuts, plus written installation guidance. No advanced wiring skills are required for owners comfortable using basic hand tools.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePre-assembled wiring harnesses (7-way and 4-way)\u003c\/li\u003e\n  \u003cli\u003eMounting bracket shaped for bumper or receiver mount\u003c\/li\u003e\n  \u003cli\u003eInstallation accessories: screws and nuts included\u003c\/li\u003e\n  \u003cli\u003eInstallation instructions provided for reference\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the construction and durability features?\u003c\/h3\u003e\n\u003cp\u003eThe connectors use high-strength ABS plastic housings with an external protective layer to guard wiring against abrasion and road grime. Contacts are arranged to keep reliable signal and power transfer to trailer lights and brakes. While not sealed for submersion, the design is built to withstand normal road exposure and towing conditions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eABS plastic connector bodies for impact resistance\u003c\/li\u003e\n  \u003cli\u003eOuter protective layer over the wiring bundle\u003c\/li\u003e\n  \u003cli\u003ePre-assembled joints reduce failure points from field splicing\u003c\/li\u003e\n  \u003cli\u003eDesigned for standard towing electrical loads\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan this kit support different trailer setups?\u003c\/h3\u003e\n\u003cp\u003eYes — both 7-way and 4-way plugs are included so you can connect trailers with basic lighting or full multi-function setups that require power for brakes and auxiliary circuits. Switching between plugs is quick and keeps you prepared whether you haul a small utility trailer or a heavier load with electric brakes. For larger electrical demands, verify your vehicle’s towing capacity and circuit ratings.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e4-way flat for tail, turn and brake lights\u003c\/li\u003e\n  \u003cli\u003e7-way round for electric brakes, auxiliary power and reverse feed\u003c\/li\u003e\n  \u003cli\u003eUse included bracket to position connectors for easy access\u003c\/li\u003e\n  \u003cli\u003eIdeal for mixed trailer fleets or future upgrades\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This Yunnergo harness kit suits owners of compatible Chevy or GMC trucks and vans who need a fast, factory-style replacement for trailer connectors. It’s a good option for DIY installers, fleet maintenance techs, and anyone who wants both 4-way and 7-way connections ready to use without splicing or complex wiring. Confirm your vehicle year and bumper socket type before ordering to ensure correct fitment.\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 kit require splicing into vehicle wiring?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No — the harness is pre-assembled to plug into factory sockets without cutting or splicing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this compatible with my 2013 Silverado 1500?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — the kit lists Silverado 1500 models 2001–2019, but verify the vehicle socket matches the product images.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Yunnergo","offers":[{"title":"Default Title","offer_id":48084883308702,"sku":"B0CLLJ3QBL","price":35.59,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/yunnergo-front-view-connector-mounted.jpg?v=1785865063","url":"https:\/\/northtrailauto.ca\/products\/yunnergo-flat-trailer-harness-plug-kit-for-silverado-2001-2019-pre-wired-7-way-4-way-with-mounting-bracket","provider":"North Trail Auto","version":"1.0","type":"link"}