{"product_id":"oyviny-4-pin-trailer-wiring-harness-for-toyota-highlander-2004-2007-plug-and-play-with-powered-module-pure-copper","title":"Oyviny 4‑Pin Trailer Wiring Harness for Toyota Highlander 2004–2007 — Plug‑and‑Play with Powered Module \u0026 Pure Copper","description":"\u003cp\u003e\u003cstrong\u003eThe Oyviny 56107 is a custom 4‑pin trailer wiring harness that adds a durable, plug‑and‑play 4‑way connector to 2004–2007 Toyota Highlander models equipped with the factory tow package.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf you own a 2004, 2005, 2006 or 2007 Toyota Highlander with the factory tow package and need a reliable way to power trailer tail lights, turn signals and brake lights, this harness provides a direct, vehicle‑specific solution. Designed to match factory connectors and avoid wire splicing, the Oyviny 56107 installs quickly while protecting your vehicle’s electrical system with a powered module and in‑line fuse.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this harness connect to my Highlander without splicing?\u003c\/h3\u003e\n\n\u003cp\u003eThe Oyviny 56107 uses custom‑molded connectors that mate with the Highlander’s factory tow package plugs, so you simply unplug the original connection and plug in the harness. No cutting, tapping, or soldering is required—making installation fast and reversible.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eVehicle‑specific plug ends for exact fit\u003c\/li\u003e\n  \u003cli\u003ePlug‑and‑play design eliminates wire splicing\u003c\/li\u003e\n  \u003cli\u003eIncludes battery feed via powered module to protect vehicle circuits\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat signals and lights will this 4‑pin connector support?\u003c\/h3\u003e\n\n\u003cp\u003eThis 4‑pin flat connector supplies the standard trailer lighting signals: running\/taillights, left and right turn signals, and an integrated brake\/turn feed depending on trailer wiring. It’s intended for trailers that don’t require a dedicated brake controller or auxiliary power circuits.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTaillight and running light feed\u003c\/li\u003e\n  \u003cli\u003eLeft and right turn signal output\u003c\/li\u003e\n  \u003cli\u003eCompatible with most 4‑pin trailers and light‑only loads\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and protections does the harness include?\u003c\/h3\u003e\n\n\u003cp\u003eOyviny built the 56107 with longevity in mind: 16 AWG pure copper conductors inside durable ABS molded connectors for consistent conductivity and corrosion resistance. Critical components such as the flat connector and the inline fuse are covered with rubber dust caps to keep out moisture and dirt.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e16 AWG bonded pure copper wiring for reliable conductivity\u003c\/li\u003e\n  \u003cli\u003eABS plastic connectors resistant to impacts and weathering\u003c\/li\u003e\n  \u003cli\u003eRubber dust caps for connector and fuse to prevent corrosion and shorts\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this wiring harness overload my Highlander’s electrical system?\u003c\/h3\u003e\n\n\u003cp\u003eNo. The harness includes a powered module that draws directly from the battery and an in‑line fuse to limit current, so trailer lighting loads don’t run through sensitive vehicle circuits. This reduces the chance of blown fuses or electrical faults in the factory harness.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBattery‑fed module prevents excessive load on factory wiring\u003c\/li\u003e\n  \u003cli\u003eIn‑line fuse protects wiring from short circuits and overloads\u003c\/li\u003e\n  \u003cli\u003eDesigned to meet typical trailer lighting current requirements\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The Oyviny 56107 wiring harness is intended for Toyota Highlander owners (model years 2004–2007) who have the factory tow package and want a quick, factory‑style way to add a 4‑pin trailer connector. It’s well suited for drivers hauling small utility trailers, boat trailers with separate brake systems, or anyone needing a dependable, corrosion‑resistant trailer light connection without altering factory wiring. If your trailer requires 5‑pin or 7‑pin functions (electric brakes, auxiliary power), consider a different harness or adapter that includes those circuits; otherwise, this harness provides a clean, vehicle‑matched installation for standard trailer lights.\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: Is this harness compatible with all Toyota Highlander trims?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Only Highlander models from 2004–2007 that have the factory tow package are compatible.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do I need to cut or splice my factory wiring to install it?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No splicing required—this harness plugs directly into the vehicle’s factory tow connectors.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Oyviny","offers":[{"title":"Default Title","offer_id":48082909757598,"sku":"B09KB9VGMQ","price":55.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/oyviny-highlander-front-connector.jpg?v=1785819250","url":"https:\/\/northtrailauto.ca\/products\/oyviny-4-pin-trailer-wiring-harness-for-toyota-highlander-2004-2007-plug-and-play-with-powered-module-pure-copper","provider":"North Trail Auto","version":"1.0","type":"link"}