{"product_id":"seamaka-26ft-trailer-wiring-harness-4-pin-5-wire-jacketed-16awg-cable-marine-grade-durability","title":"Seamaka 26FT Trailer Wiring Harness 4-Pin 5-Wire — Jacketed 16AWG Cable, Marine-Grade Durability","description":"\u003cp\u003e\u003cstrong\u003eSeamaka's 26-foot 4-pin 5-wire trailer wiring harness is a heavy-duty, jacketed cable kit that connects both-side taillights for trailers, RVs, and boats.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWhen rewiring a trailer or adding a longer extension between tow vehicle and trailer, a reliable cable that resists abrasion, moisture, and corrosion matters. This Seamaka wiring harness provides color-coded connections, a durable PVC jacket, and a long 26-foot length to reach common hitch configurations on boats, horse trailers, utility trailers and ATVs without splicing multiple shorter cables.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this harness make trailer light wiring easier?\u003c\/h3\u003e\n\u003cp\u003eThe harness comes with a standard 4-way flat plug and clearly color-coded 5-wire leads to match brake, turn, tail, and ground circuits. That reduces guesswork during installation and lets most DIYers finish a rewiring job quickly with basic tools.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e4-way flat plug fits common trailer connectors\u003c\/li\u003e\n  \u003cli\u003eColor-coded wires speed up matching and testing\u003c\/li\u003e\n  \u003cli\u003eIncludes a 2.5-foot ground lead for secure chassis grounding\u003c\/li\u003e\n  \u003cli\u003e26-foot main cable eliminates need for extra extensions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat makes the cable durable for outdoor and marine use?\u003c\/h3\u003e\n\u003cp\u003eThis harness uses a thick PVC outer jacket over copper conductors to resist chafing, UV exposure and moisture. The construction and 16 AWG size balance flexibility with the current capacity needed for standard trailer lighting circuits.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePVC insulation and sheath protect against abrasion and weathering\u003c\/li\u003e\n  \u003cli\u003eCopper wire cores provide reliable conductivity\u003c\/li\u003e\n  \u003cli\u003eRated for -22°F to 221°F operating temperatures\u003c\/li\u003e\n  \u003cli\u003e300-volt rated insulation for secure low-voltage use\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich trailers and setups is this harness compatible with?\u003c\/h3\u003e\n\u003cp\u003eThe Seamaka 4-pin 5-wire harness is intended for vehicles and trailers that use a 4-way flat plug for lights and require a separate ground lead. It works well for boat trailers, cargo\/utility trailers, ATV haulers and many horse trailers.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with standard 4-way flat trailer sockets\u003c\/li\u003e\n  \u003cli\u003eSuitable for rewiring both-side taillights and turn signals\u003c\/li\u003e\n  \u003cli\u003eDesigned for multi-purpose trailers including marine use\u003c\/li\u003e\n  \u003cli\u003eNot for 7-way round\/flat brake-control power applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I install and test the wiring harness?\u003c\/h3\u003e\n\u003cp\u003eRoute the 26-foot jacketed cable along the trailer frame and secure with clamps or zip ties, attach the 2.5-foot ground to a clean metal surface, then plug into the tow vehicle. Use a circuit tester or have an assistant operate lights while you confirm each function at the trailer sockets and lamps.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eClean mounting points before attaching ground wire\u003c\/li\u003e\n  \u003cli\u003eKeep cable clear of sharp edges and moving parts\u003c\/li\u003e\n  \u003cli\u003eTest tail, turn, brake, and ground functions after hookup\u003c\/li\u003e\n  \u003cli\u003eTrim and seal any cut ends to prevent water intrusion\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? If you tow boats, ATVs, utility or horse trailers and need a straightforward, long-reach wiring solution, the Seamaka 26FT 4-pin 5-wire harness is built for DIY rewires and replacements. It’s aimed at owners who want a weather-resistant, color-coded cable set that reduces installation time and future electrical troubleshooting without moving to more complex multi-function connectors.\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 compatible with a 7-way trailer socket?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No — this kit is built for standard 4-way flat systems. 7-way sockets supply additional circuits and need a different adapter or harness.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this harness for marine trailers?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — the PVC jacket and copper conductors make it suitable for boat trailers, though sealing connections is recommended for saltwater exposure.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Seamaka","offers":[{"title":"Default Title","offer_id":67592179777721,"sku":"B0DJXFTBCK","price":58.77,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/seamaka-front-view-4-pin-flat-plug.jpg?v=1790562154","url":"https:\/\/redleafauto.ca\/products\/seamaka-26ft-trailer-wiring-harness-4-pin-5-wire-jacketed-16awg-cable-marine-grade-durability","provider":"Redleaf Auto","version":"1.0","type":"link"}