{"product_id":"oyviny-4-pin-5-wire-trailer-wiring-harness-22ft-y-harness-pure-copper-with-nylon-sleeve","title":"Oyviny 4-Pin 5-Wire Trailer Wiring Harness 22FT Y-Harness — Pure Copper with Nylon Sleeve","description":"\u003cp\u003e\u003cstrong\u003eOyviny’s 22-foot 4-pin, 5-wire Y-harness is a complete trailer light rewiring kit that supplies pure copper conductors, color-coded leads and a nylon-protected sleeve to restore left and right taillight function without complex splicing.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWhen a trailer’s taillights or turn signals fail, diagnosing and replacing individual runs can be time-consuming. This Oyviny harness simplifies the job: a wishbone (Y) design carries two brown tail-light leads so both sides illuminate, while color-coded wiring and a 4-way flat plug make it compatible with standard connectors. The assembly uses thick PVC insulation, pure copper cores for better conductivity, and a nylon net sleeve to resist abrasion and weather exposure—ideal for replacing worn harnesses on utility trailers, boat trailers, or campers.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this harness simplify rewiring dual taillights?\u003c\/h3\u003e\n\n\u003cp\u003eRather than running two separate tail-light circuits, the Y-harness splits the tail-light feed into left and right outputs, so both sides receive power simultaneously without additional splices. The kit includes a standard 4-way flat male plug to mate with industry sockets and color-coded wires to match existing trailer wiring quickly.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eWishbone design delivers two brown tail-light leads for left\/right lights\u003c\/li\u003e\n  \u003cli\u003eColor-coded wires (brown, yellow, green, white, etc.) for easy matching\u003c\/li\u003e\n  \u003cli\u003e4-way flat male connector fits industry-standard sockets\u003c\/li\u003e\n  \u003cli\u003e22 ft main lead plus 2.5 ft ground for flexible routing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and protections help it last outdoors?\u003c\/h3\u003e\n\n\u003cp\u003eThe harness combines pure copper conductors for reliable electrical flow with thick PVC insulation to resist oil, UV and moisture. Additionally, a black nylon net tube surrounds the bundle to reduce abrasion where the cable rubs against trailer frames or fasteners.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePure copper wiring for improved conductivity and lower voltage drop\u003c\/li\u003e\n  \u003cli\u003eThick PVC jacket for corrosion and weather resistance\u003c\/li\u003e\n  \u003cli\u003eNylon net sleeve guards against chafing on metal edges\u003c\/li\u003e\n  \u003cli\u003eRobust 4-way flat plug built to withstand trailer environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this kit fit my trailer and how long is the cable?\u003c\/h3\u003e\n\n\u003cp\u003eThe Oyviny 4-pin 5-wire harness is built to match common 4-way flat sockets used on most trailers. Its 22-foot main cable provides ample reach from the trailer tongue to rear fixtures while an extra 2.5-foot ground lead allows secure chassis attachment without strain.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e22 ft main harness for long frame runs or routing flexibility\u003c\/li\u003e\n  \u003cli\u003e2.5 ft dedicated ground wire for secure chassis grounding\u003c\/li\u003e\n  \u003cli\u003eDesigned for standard 4-way flat trailer sockets and plugs\u003c\/li\u003e\n  \u003cli\u003eSuitable for replacing damaged factory or aftermarket harnesses\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow straightforward is installation for DIYers?\u003c\/h3\u003e\n\n\u003cp\u003eColor-coded wires reduce guesswork and make splicing fast; each function is labeled by color so you can tie into brakelight, turn, tail and ground circuits quickly. Basic tools—wire strippers, connectors and heat shrink or marine-grade tape—are all that’s needed for a neat, dependable connection.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eColor-coded wiring streamlines matching existing circuits\u003c\/li\u003e\n  \u003cli\u003eSplice-ready leads work with butt connectors or solder joints\u003c\/li\u003e\n  \u003cli\u003eUse heat-shrink or marine-grade sealant for waterproofing\u003c\/li\u003e\n  \u003cli\u003eNo complex adapters required for 4-way flat systems\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The Oyviny 4-pin 5-wire 22FT harness is aimed at DIY trailer owners, small repair shops and fleet managers who need a reliable, easy-to-install replacement for worn or damaged trailer wiring. It suits utility trailers, boat trailers, horse trailers, campers and any application that uses a 4-way flat connector and requires separate left\/right tail-light circuits. If you want a long, protected harness with clear color coding and solid copper conductors, this kit is built to make the repair quick and durable.\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 trailer sockets?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The Oyviny harness uses a standard 4-way flat male plug designed to mate with industry 4-way flat sockets.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this to replace both taillight wires without splicing separately?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The Y-wishbone design supplies two tail-light outputs, so left and right tails run simultaneously without extra separate runs.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Oyviny","offers":[{"title":"Default Title","offer_id":48087660003486,"sku":"B0CNXDLQT2","price":39.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/oyviny-front-view-4-pin-5-wire-harness.jpg?v=1785927800","url":"https:\/\/northtrailauto.ca\/products\/oyviny-4-pin-5-wire-trailer-wiring-harness-22ft-y-harness-pure-copper-with-nylon-sleeve","provider":"North Trail Auto","version":"1.0","type":"link"}