{"product_id":"oyviny-4-pin-trailer-wiring-harness-for-gmc-cadillac-chevy-buick-77in-16-awg-plug-and-play-4-flat-connector","title":"Oyviny 4‑Pin Trailer Wiring Harness for GMC\/Cadillac\/Chevy\/Buick — 77in, 16 AWG plug‑and‑play 4‑flat connector","description":"\u003cp\u003e\u003cstrong\u003eThe Oyviny Custom 4‑Pin Trailer Wiring Harness provides a factory‑style 4‑flat connector to add trailer lighting and signaling to compatible GMC Acadia, Cadillac XT5\/XT6, Chevy Blazer and Buick Envision models without splicing.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf you need a simple, reliable way to hook a small trailer, cargo carrier or light tow accessory to your SUV, this plug‑and‑play harness installs into the OEM tow outlet so you get a proper 4‑way connection for tail, brake and turn signals. Built with 16 AWG bonded copper conductors, a weather‑resistant connector and a generous wiring length, the harness is designed for straightforward installation and long‑term durability.\u003c\/p\u003e\n\n\u003ch3\u003eWhich vehicles will this wiring harness fit?\u003c\/h3\u003e\n\u003cp\u003eThis harness was tailored for select model years and slots into the factory tow harness on those vehicles. Confirming compatibility before purchase is recommended so the connector matches your vehicle's OEM trailer wiring port.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eGMC Acadia: compatible years 2017–2023\u003c\/li\u003e\n  \u003cli\u003eCadillac XT5: compatible years 2017–2025\u003c\/li\u003e\n  \u003cli\u003eCadillac XT6: compatible years 2020–2025\u003c\/li\u003e\n  \u003cli\u003eChevrolet Blazer: compatible years 2019–2025\u003c\/li\u003e\n  \u003cli\u003eBuick Envision: compatible years 2021–2025\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is the installation for a non‑professional?\u003c\/h3\u003e\n\u003cp\u003eInstallation is designed to be straightforward: the harness plugs into the OEM tow package connector with no need to cut, splice or modify factory wiring. Most users can complete the install with basic hand tools and a few minutes of time.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect plug‑in to the OEM tow harness—no wiring splices required\u003c\/li\u003e\n  \u003cli\u003eIncludes 77 inches of cable for flexible routing options\u003c\/li\u003e\n  \u003cli\u003eTypical install time: minutes to under an hour for most owners\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the electrical and durability features?\u003c\/h3\u003e\n\u003cp\u003eThe harness uses 16 AWG bonded pure copper conductors for efficient current flow and consistent lighting performance. The connector includes corrosion‑resistant contacts and a rubber dust cap to keep moisture and debris out when not in use.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e16 AWG bonded copper wires for stable conductivity\u003c\/li\u003e\n  \u003cli\u003eTin‑plated terminals resist corrosion and improve contact life\u003c\/li\u003e\n  \u003cli\u003eRubber dust cover protects the 4‑flat socket from elements\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat types of trailers and lights will this 4‑way connector support?\u003c\/h3\u003e\n\u003cp\u003eThe standard 4‑flat connector carries tail, brake and left\/right turn signals plus ground, covering most small trailers, bike racks and cargo carriers that rely on basic lighting circuits. It is not intended to carry auxiliary power or feed electric trailer brakes.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSupports trailer tail lights, brake lights and turn indicators\u003c\/li\u003e\n  \u003cli\u003eCompatible with most light‑duty trailers and hitch accessories\u003c\/li\u003e\n  \u003cli\u003eNot intended as a charging or powered auxiliary connection\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The Oyviny 4‑pin harness is aimed at owners of the listed GMC, Cadillac, Chevrolet and Buick SUVs who want a factory‑style 4‑way trailer connector without modifying vehicle wiring. It's ideal for drivers who tow small trailers, use hitch‑mounted cargo carriers, bike racks or occasional towing and prefer a durable, weather‑protected plug that integrates cleanly with their OEM tow package.\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 or splicing my vehicle wiring?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. The harness plugs into the vehicle's OEM tow package connector—no cutting or splicing required.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will this support electric trailer brakes or auxiliary power?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. The 4‑flat connector supplies lighting circuits only; it does not provide power for electric brakes or charging.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Oyviny","offers":[{"title":"Default Title","offer_id":67593193586873,"sku":"B09QKCD96L","price":56.9,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/oyviny-front-connector-view_2a180acf-9551-4ccb-a542-31bf9a318c02.jpg?v=1790572793","url":"https:\/\/redleafauto.ca\/products\/oyviny-4-pin-trailer-wiring-harness-for-gmc-cadillac-chevy-buick-77in-16-awg-plug-and-play-4-flat-connector","provider":"Redleaf Auto","version":"1.0","type":"link"}