{"product_id":"mecmo-4-pin-trailer-wiring-harness-for-jeep-wrangler-jl-jlu-gladiator-jt-2018-2025-plug-and-play-oem-style-4-way-connector","title":"MECMO 4-Pin Trailer Wiring Harness for Jeep Wrangler JL\/JLU \u0026 Gladiator JT (2018-2025) — Plug-and-Play, OEM-Style 4-Way Connector","description":"\u003cstrong\u003eMECMO 56407 is a vehicle-specific 4-pin trailer wiring harness that adds standard trailer lighting connections to select 2018–2025 Jeep Wrangler JL\/JLU and 2020–2025 Jeep Gladiator JT models.\u003c\/strong\u003e\n\n\u003cp\u003eThis plug-and-play wiring harness is built to integrate with the factory taillight wiring of compatible Jeep models and provides a stowed 4-way flat connector near the hitch for powering trailer tail, brake, and turn lights. The kit is made for owners who want a durable, OEM-style connection without splicing into factory wiring. It includes a dust cover, pre-terminated plug, and heavy-duty wiring to resist corrosion and maintain reliable conductivity during frequent towing use. Note: a separate 12V hot lead must be run to the vehicle battery for proper operation.\u003c\/p\u003e\n\n\u003ch3\u003eWhich Jeep models and years will this wiring harness fit?\u003c\/h3\u003e\n\u003cp\u003eThis MECMO harness is tailored for Jeep Wrangler and Gladiator models with the factory wiring layout that accepts a 4-way connector. It covers 2018 through 2025 Jeep Wrangler JL and JLU (Unlimited) plus 2020 through 2025 Jeep Gladiator JT pickups, including Rubicon, Sahara, Sport and 4xe variants. It excludes Wrangler EcoDiesel models.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e2018–2025 Wrangler JL \/ JLU compatibility\u003c\/li\u003e\n  \u003cli\u003e2020–2025 Gladiator JT compatible\u003c\/li\u003e\n  \u003cli\u003eFits 2-door and 4-door Wrangler configurations where factory connector exists\u003c\/li\u003e\n  \u003cli\u003eNot compatible with EcoDiesel-equipped Wranglers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is installation for someone with basic DIY skills?\u003c\/h3\u003e\n\u003cp\u003eThe harness is designed as a T‑connector that plugs into the Jeep’s existing taillight harness behind the bumper—no cutting or splicing of factory wires is required. You will, however, need to run the included hot lead up to the vehicle battery to supply 12V for trailer lighting. Typical installation takes under an hour with basic tools.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePlug-and-play T-connector for quick integration\u003c\/li\u003e\n  \u003cli\u003eNo permanent wire cutting or soldering to vehicle harness\u003c\/li\u003e\n  \u003cli\u003eHot lead requires routing to battery and secure terminal connection\u003c\/li\u003e\n  \u003cli\u003eIncludes rubber dust cover for connector protection when unused\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat signals and functions does the 4-way connector support?\u003c\/h3\u003e\n\u003cp\u003eThe standard 4-way flat connector supplies the essential lighting circuits a trailer needs: running\/tail lights, left and right turn signals, and brake lamps. It does not provide dedicated power for trailer charging or reverse\/auxiliary functions—those require a 7-way or additional wiring. Its compact, stowable design keeps the connector tucked under the vehicle when not in use.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSupports tail\/running lights, brake lights, and left\/right turn signals\u003c\/li\u003e\n  \u003cli\u003eStows under vehicle near hitch when disconnected\u003c\/li\u003e\n  \u003cli\u003eNot a 7-pin — no trailer battery charge or trailer backup power\u003c\/li\u003e\n  \u003cli\u003eRubber dust cover protects contacts from moisture and dirt\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and features help this harness last outdoors?\u003c\/h3\u003e\n\u003cp\u003eMECMO built this harness with heavy‑gauge bonded wire and tin‑plated copper terminals to combat corrosion and maintain conductivity in salt, mud, and wet conditions. The connector includes molded tabs for easier gripping and a snug rubber dust cover to limit debris and moisture intrusion when the trailer plug is not connected.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTin-plated copper terminals resist corrosion and improve reliability\u003c\/li\u003e\n  \u003cli\u003eHeavy-duty bonded wiring withstands road abrasion and flexing\u003c\/li\u003e\n  \u003cli\u003eMolded connector tabs for easier plug\/unplug in tight spaces\u003c\/li\u003e\n  \u003cli\u003eProtective rubber dust cap reduces exposure to elements\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: This wiring harness is ideal for Jeep owners who frequently tow light trailers and want a factory‑style, reversible installation without modifying vehicle wiring. It suits DIY enthusiasts and installers looking for a durable 4-way flat solution for compatible 2018–2025 Wrangler JL\/JLU and 2020–2025 Gladiator JT models. If you need trailer auxiliary power or a 7‑pin configuration, consider an upgraded harness or professional hardwiring instead.\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 require cutting vehicle wires?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No cutting is required—the T‑connector plugs into the factory taillight harness behind the bumper.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will this provide power to charge a trailer battery?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No, the 4‑pin flat connector only supplies lighting circuits; charging needs a 7‑pin or additional wiring.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"MECMO","offers":[{"title":"Default Title","offer_id":48080951869598,"sku":"B0B7J94G3S","price":79.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/mecmo-56407-front-view-harness.jpg?v=1785793165","url":"https:\/\/northtrailauto.ca\/products\/mecmo-4-pin-trailer-wiring-harness-for-jeep-wrangler-jl-jlu-gladiator-jt-2018-2025-plug-and-play-oem-style-4-way-connector","provider":"North Trail Auto","version":"1.0","type":"link"}