{"product_id":"oyviny-4-way-trailer-wiring-harness-55540-for-chevy-express-gmc-savana-2003-2023-plug-in-weatherproof","title":"Oyviny 4-Way Trailer Wiring Harness 55540 for Chevy Express\/GMC Savana (2003–2023) — Plug-in Weatherproof","description":"\u003cp\u003e\u003cstrong\u003eOyviny's 4-way trailer wiring harness 55540 installs a weatherproof, plug-and-play 4-flat connector on compatible 2003–2023 Chevy Express and GMC Savana trucks for reliable trailer lighting and turn\/brake signal operation.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWhether you're towing a utility trailer, boat, or camper, the right wiring harness makes the difference between safe, legal towing and flaky lights or time-consuming repairs. This custom-fit harness is designed to match factory plugs on many Chevrolet Express and GMC Savana models, giving you a neat, durable connection without cutting or splicing factory wiring.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this harness attach to my Chevy Express or GMC Savana?\u003c\/h3\u003e\n\u003cp\u003eThe Oyviny 55540 is a direct-fit harness that plugs into the vehicle's existing trailer wiring connector locations. No modifications to factory wiring are required, so installation is faster and keeps OEM electrical integrity intact.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect plug-in design that matches factory sockets on compatible model years\u003c\/li\u003e\n  \u003cli\u003eNo cutting, crimping, or splicing—reduces installation time\u003c\/li\u003e\n  \u003cli\u003eApproximately 80 inches of lead length for routing flexibility\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat lighting functions does the 4-way connector support?\u003c\/h3\u003e\n\u003cp\u003eThis 4-flat connector carries the essential trailer lighting circuits used by most small trailers: tail\/running lights, left and right turn signals, and brake lights. It’s the industry standard for many utility and boat trailers.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTail\/running light circuit compatible with most trailers\u003c\/li\u003e\n  \u003cli\u003eLeft and right turn signals and brake light circuits included\u003c\/li\u003e\n  \u003cli\u003eWorks with trailers that expect a standard 4-flat interface\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs the harness durable enough for road and weather exposure?\u003c\/h3\u003e\n\u003cp\u003eOyviny designed this harness for longevity in real-world towing conditions. It uses corrosion-resistant components and protective sleeving to resist abrasion and moisture, and comes with a rubber dust cover for the connector when not in use.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCorrosion-resistant 4-pin flat connector with rubber dust cap\u003c\/li\u003e\n  \u003cli\u003ePure copper conductors for solid electrical conductivity\u003c\/li\u003e\n  \u003cli\u003eBlack nylon net tube sleeving protects wires from wear and weather\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich vehicle models and years are compatible with this kit?\u003c\/h3\u003e\n\u003cp\u003eThe kit covers a broad range of Chevy Express and GMC Savana vans and trucks. Confirm compatibility with your vehicle model and year before purchase to ensure a perfect plug-in fit.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eChevrolet Express 1500: 2003–2014\u003c\/li\u003e\n  \u003cli\u003eChevrolet Express 2500 \u0026amp; 3500: 2003–2023\u003c\/li\u003e\n  \u003cli\u003eGMC Savana 1500: 2003–2014; Savana 2500 \u0026amp; 3500: 2003–2023\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The Oyviny 55540 4-way trailer wiring harness is ideal for DIY vehicle owners, fleet managers, and tradespeople who need a reliable, OEM-friendly trailer connector for their Chevy Express or GMC Savana. If you want a simple, durable solution without altering factory wiring—and flexible routing thanks to the long lead length—this harness provides a straightforward installation and dependable trailer lighting performance.\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 cut or splice my vehicle wiring to use this harness?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. The Oyviny 55540 is a plug-and-play harness that connects to existing 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: Will this work with my 2017 GMC Savana 2500?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The harness is compatible with GMC Savana 2500 models from 2003 through 2023, including 2017.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Oyviny","offers":[{"title":"Default Title","offer_id":48086344237214,"sku":"B09TKVXL7Z","price":48.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/oyviny-front-connector-profile.jpg?v=1785895732","url":"https:\/\/northtrailauto.ca\/products\/oyviny-4-way-trailer-wiring-harness-55540-for-chevy-express-gmc-savana-2003-2023-plug-in-weatherproof","provider":"North Trail Auto","version":"1.0","type":"link"}