{"product_id":"czc-auto-4-pin-trailer-wire-harness-extension-30ft-18-awg-copper-plug-and-play","title":"CZC AUTO 4-Pin Trailer Wire Harness Extension, 30ft — 18 AWG Copper, Plug-and-Play","description":"\u003cp\u003e\u003cstrong\u003eCZC AUTO's 30-foot 4-pin trailer light wire harness extension delivers a durable, plug-and-play way to lengthen or repair standard 4-way flat trailer wiring without cutting your vehicle's original harness.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf your trailer wiring is too short, damaged, or you need a quick way to test circuits, this 30ft 4-way flat extension provides extra reach and reliable conductivity. Built with 18-gauge pure copper conductors, weather-resistant PVC jacket, and nickel-plated terminals, the harness is made for common trailers — boats, ATVs, cargo trailers, horse trailers and more — that use the standard 4-pin connector.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the extension simplify trailer wiring repairs?\u003c\/h3\u003e\n\u003cp\u003eThe male-to-female 4-pin flat connector lets you extend an existing harness without splicing or altering the factory wiring. It’s designed for plug-and-play hookup so you can restore or extend lighting quickly and keep original wiring intact.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e30-foot length gives ample reach for most towing setups\u003c\/li\u003e\n  \u003cli\u003eColor-coded wires match standard trailer circuits for fast identification\u003c\/li\u003e\n  \u003cli\u003eMale and female 4-way flat ends prevent cutting and rejoining vehicle harnesses\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this hold up outdoors and around saltwater or dirt?\u003c\/h3\u003e\n\u003cp\u003eThe harness uses a UV-resistant PVC jacket and corrosion-resistant, nickel-plated terminals to stand up to weather, road grime and marine conditions. Pure copper cores ensure consistent electrical flow while the outer jacket protects against abrasion and sunlight.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e100% pure copper conductors for low-resistance connections\u003c\/li\u003e\n  \u003cli\u003ePVC jacket resists UV damage and abrasion on trailers and hitches\u003c\/li\u003e\n  \u003cli\u003eNickel-plated terminals reduce oxidation for longer service life\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs this compatible with my trailer and towing vehicle?\u003c\/h3\u003e\n\u003cp\u003eThis extension is compatible with virtually any vehicle and trailer using a standard 4-pin flat connector. It extends turn signals, brake lights and running lights circuits; check that your trailer uses a 4-way flat plug before ordering.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eWorks with most 4-pin flat trailer connectors used on boats, ATVs, horse and utility trailers\u003c\/li\u003e\n  \u003cli\u003eColor-coded wiring follows industry convention for easy matching\u003c\/li\u003e\n  \u003cli\u003e18 AWG wiring balances flexibility with adequate current capacity for lighting circuits\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is it to install and troubleshoot with this harness?\u003c\/h3\u003e\n\u003cp\u003eInstallation requires no soldering or permanent changes — simply plug the extension between the tow vehicle and trailer. The harness also serves as a convenient troubleshooting tool to isolate wiring faults by substituting for suspect sections.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePlug-and-play male and female ends eliminate cutting or splicing stock harnesses\u003c\/li\u003e\n  \u003cli\u003eColor-coded wires speed up visual checks and connections\u003c\/li\u003e\n  \u003cli\u003eHandy for isolating problems when diagnosing non-functioning trailer lights\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? This 30ft CZC AUTO 4-pin trailer wire extension is intended for trailer owners, marine and RV enthusiasts, fleet operators and DIY mechanics who need a reliable, long-lasting way to extend, replace or test 4-way flat trailer lighting circuits. If you tow boats, ATVs, utility trailers, or horse trailers and want a corrosion-resistant, easy-to-install harness that preserves your vehicle’s original wiring, this extension is a practical, cost-effective option.\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: Will this work with a 5-pin trailer plug?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. This product is a 4-way flat extension and only matches trailers and vehicles with standard 4-pin connectors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I cut this harness to shorten it?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: You can trim and re-terminate if you have proper connectors, but it’s designed for plug-and-play use without cutting the original harness.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"CZC AUTO","offers":[{"title":"Default Title","offer_id":55161653363031,"sku":"B08HYCQPFG","price":29.51,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/czc-auto-4pin-30ft-front-connector.jpg?v=1790330903","url":"https:\/\/britishgarage.co.uk\/products\/czc-auto-4-pin-trailer-wire-harness-extension-30ft-18-awg-copper-plug-and-play","provider":"British Garage","version":"1.0","type":"link"}