{"product_id":"oyviny-trailer-wiring-harness-4-pin-5-wire-y-split-22ft-pure-copper-with-nylon-net-protection","title":"Oyviny Trailer Wiring Harness 4‑Pin 5‑Wire Y‑Split 22ft — Pure Copper with Nylon Net Protection","description":"\u003cp\u003e\u003cstrong\u003eOyviny's 22ft 4-pin 5-wire trailer wiring harness is a Y-style rewiring kit that powers left and right taillights, turn signals, and brakes using pure copper conductors protected by a nylon net sleeve.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis trailer wiring harness is built for straightforward replacement or upgrade of a standard 4-way flat connector. It combines a wishbone (Y) layout that splits the taillight circuit into two brown leads, full color-coded wiring for quick splicing, and a long 22‑foot main run plus a separate ground lead. Thick PVC insulation and a braided nylon protective tube guard the copper wires from abrasion and corrosion while keeping installation tidy.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this harness simplify trailer taillight rewiring?\u003c\/h3\u003e\n\u003cp\u003eInstead of running separate wires or splicing to create dual taillight feeds, the Y-harness design carries a single input that splits cleanly to both taillight circuits. Color-coded conductors match industry wiring standards so you can identify functions fast. The 22ft length gives room to route the cable along trailer frames without tension.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eY-shaped wishbone layout sends the brown lead to left and right taillights simultaneously\u003c\/li\u003e\n  \u003cli\u003eColor-coded wires for brake, turn, tail and ground reduce wiring errors\u003c\/li\u003e\n  \u003cli\u003e22 feet of main cable and a 2.5‑foot ground allow flexible routing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and protection keep the wiring durable?\u003c\/h3\u003e\n\u003cp\u003eThe harness uses pure copper conductors for reliable electrical flow and thicker PVC jackets for weather and abrasion resistance. Around the bundle is a black nylon net tube that adds another layer of mechanical protection and helps prevent chafing during vibration. Terminals and the 4‑flat plug are made to fit standard trailer sockets for a secure connection.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePure copper conductors for consistent conductivity\u003c\/li\u003e\n  \u003cli\u003eThick PVC insulation resists moisture and corrosion\u003c\/li\u003e\n  \u003cli\u003eNylon net tube prevents rubbing and bundles cables neatly\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this fit my trailer and vehicle setup?\u003c\/h3\u003e\n\u003cp\u003eThe male 4‑flat connector matches industry-standard 4-way flat sockets found on most trucks and trailers, making it broadly compatible as a replacement or upgrade. The harness is intended for trailers that use a 4‑pin\/4‑way system but need a split taillight feed. It’s not for trailers requiring stop\/turn separation beyond the 4‑way convention or for 7‑pin applications.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMale 4‑flat plug fits standard 4-way trailer sockets\u003c\/li\u003e\n  \u003cli\u003eDesigned for trailers needing left\/right taillight split without extra splices\u003c\/li\u003e\n  \u003cli\u003eNot compatible with 7-pin or RV-specific multi-function plugs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is installation for DIYers?\u003c\/h3\u003e\n\u003cp\u003eColor-coded wires and the ready-made plug make the harness installation approachable for anyone familiar with basic trailer wiring. Simply splice each colored conductor into your existing trailer leads or mount using common connectors and secure the ground. The generous cable length removes the need to extend wires or create tight joins.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eColor coding speeds identification: brown for taillights, etc.\u003c\/li\u003e\n  \u003cli\u003ePre-assembled plug eliminates soldering the trailer connector\u003c\/li\u003e\n  \u003cli\u003eLong runs reduce need for additional splices or extensions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The Oyviny 4-pin 5-wire 22FT trailer wiring harness is for DIY trailer owners, small-fleet operators, and repair shops replacing worn 4‑flat connections or upgrading a single-feed tail circuit to feed both sides. Choose this harness if you want a long, protected cable assembly with pure copper conductors, clear color coding for fast hookups, and a Y-style split to power left and right taillights without complicated rewiring.\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 my 4-way trailer socket?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — the Oyviny harness uses a standard male 4‑flat plug designed to mate with industry 4-way trailer sockets.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I cut the harness to shorten it?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: You can shorten by trimming and reterminating, but ensure proper insulation and secure splices to maintain protection and conductivity.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Oyviny","offers":[{"title":"Default Title","offer_id":55167072731479,"sku":"B0CNXDLQT2","price":39.55,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/oyviny-front-view-4-pin-5-wire-plug.jpg?v=1790376505","url":"https:\/\/britishgarage.co.uk\/products\/oyviny-trailer-wiring-harness-4-pin-5-wire-y-split-22ft-pure-copper-with-nylon-net-protection","provider":"British Garage","version":"1.0","type":"link"}