{"product_id":"walsio-32ft-trailer-wiring-harness-4-pin-5-wire-black-y-split-weatherproof-sae-j1128","title":"WALSIO 32ft Trailer Wiring Harness 4-Pin 5-Wire — Black Y‑Split Weatherproof, SAE J1128","description":"\u003cp\u003e\u003cstrong\u003eWALSIO's 32-foot 4-pin 5-wire trailer wiring harness is a ready-to-install cable kit that provides full four-way trailer lighting plus a dedicated ground in a weatherproof, color-coded assembly.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis harness is made for owners who need a durable, long-reach replacement or factory-style wiring upgrade for trailers — boat trailers, ATVs, horse trailers and utility trailers. Built to SAE J1128 low-voltage cable standards, it combines 18 AWG pure copper conductors, thick PVC jacket, and an outer braided nylon sleeve for abrasion resistance. The kit includes a male 4‑way flat plug, a Y-style split to route wiring conveniently, and a 2.5 ft ground lead so you can complete the circuit without splicing or extensions.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this harness simplify trailer rewiring?\u003c\/h3\u003e\n\u003cp\u003eThe WALSIO harness arrives pre-assembled with five color-coded conductors so you don’t have to run extra wires or guess connections. Its Y-harness layout positions the split near the trailer nose, avoiding runs across the axle and reducing strain points.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFive wires cover tail, left\/right turn, brake\/stop, auxiliary, plus ground.\u003c\/li\u003e\n  \u003cli\u003eColor-coded conductors match industry-standard 4-way connections for easy hookup.\u003c\/li\u003e\n  \u003cli\u003eY-shaped split allows routing down each side of the trailer without crossing the axle.\u003c\/li\u003e\n  \u003cli\u003eIncludes a 2.5 ft ground wire to ensure a reliable chassis return path.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs this wiring durable enough for marine or heavy-duty use?\u003c\/h3\u003e\n\u003cp\u003eYes — materials and construction focus on weather resistance and long life. The 18 AWG pure copper core provides good conductivity while the PVC jacket and braided nylon sleeve protect against abrasion, oil, and UV exposure.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMeets SAE J1128 low-voltage primary cable standard for safety and performance.\u003c\/li\u003e\n  \u003cli\u003eThickened PVC outer coating resists moisture and chemicals.\u003c\/li\u003e\n  \u003cli\u003eBlack braided nylon mesh adds abrasion protection where the harness flexes most.\u003c\/li\u003e\n  \u003cli\u003eProtective plug cover keeps contacts dry and dust-free when disconnected.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this fit my trailer and my vehicle's 4‑way flat socket?\u003c\/h3\u003e\n\u003cp\u003eThe WALSIO kit is designed to mate with the common 4-way flat connectors used on most trucks and trailers. At 32 feet overall length, it's long enough for larger trailers and offers placement flexibility for routing and mounting.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with standard 4-way flat trailer sockets and four-function systems.\u003c\/li\u003e\n  \u003cli\u003e32 ft total length accommodates trailers up to and beyond 100 inches in width with flexible routing.\u003c\/li\u003e\n  \u003cli\u003eMale 4-way flat plug included for replacement installations.\u003c\/li\u003e\n  \u003cli\u003eColor-coding reduces installation errors and speeds system testing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is installation for non-professionals?\u003c\/h3\u003e\n\u003cp\u003eThe harness is built for straightforward DIY replacement: wires are color-coded and labeled by function, and the Y-configuration removes the need to run wiring across the trailer axle. Basic hand tools and the included instructions are typically all that’s required.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eColor-coded wires correspond to standard trailer lighting functions for intuitive hookup.\u003c\/li\u003e\n  \u003cli\u003ePre-terminated 4‑way male plug eliminates crimping to the vehicle connector.\u003c\/li\u003e\n  \u003cli\u003eY-harness design reduces complex routing and splicing across the axle.\u003c\/li\u003e\n  \u003cli\u003eInstruction manual included for step-by-step guidance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: The WALSIO 32FT 4-Pin 5-Wire Trailer Wiring Harness is aimed at trailer owners and DIY mechanics who want a reliable, long-length wiring solution without complicated splices or adaptor chains. It suits users replacing worn or damaged 4‑way systems, outfitting larger trailers that need extra reach and a dedicated ground, and anyone who wants a durable, weather-resistant wiring assembly built to automotive low-voltage standards. If you need a straightforward, weatherproof harness that pairs with common 4-way flat sockets and reduces routing hassles, this kit is a practical choice.\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 fit standard 4-way flat sockets?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, the kit includes a male 4-way flat plug and is designed to mate with standard 4‑way vehicle and trailer sockets.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is the wiring weatherproof for marine trailers?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The harness uses thick PVC jacket and a braided nylon sleeve with a protective plug cap for water and abrasion resistance.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"WALSIO","offers":[{"title":"Default Title","offer_id":67588803690681,"sku":"B0DQPX186C","price":81.73,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/walsio-front-view-4-way-flat-plug.jpg?v=1790525154","url":"https:\/\/redleafauto.ca\/products\/walsio-32ft-trailer-wiring-harness-4-pin-5-wire-black-y-split-weatherproof-sae-j1128","provider":"Redleaf Auto","version":"1.0","type":"link"}