{"product_id":"tekonsha-118480-4-way-flat-replacement-wiring-harness","title":"Tekonsha 118480 4-Way Flat Replacement Wiring Harness","description":"\u003cp class=\"nvn-hero\"\u003eThe Tekonsha 118480 is a 4-way flat replacement harness that steps in for your vehicle's factory towing wiring. It gives you a clean, standard trailer connector for running lights, turn signals, and brake lights on a small trailer. If you're rigging up a utility trailer or a light boat trailer, this is the plug-in piece that gets power back to the plug.\u003c\/p\u003e\n\n\u003cdiv class=\"nvn-description\"\u003e\n\u003cp\u003eThe Tekonsha 118480 is a 4-way flat replacement harness built to take over for your vehicle's factory towing wiring. It gives you a standard 4-way flat trailer connector so you can hook up the lights on a small trailer and get moving. Simple job, done right.\u003c\/p\u003e\n\u003cp\u003eHere's what a 4-way flat actually does. It carries four circuits: ground, running or taillights, left turn and brake, and right turn and brake. That's everything a basic trailer needs for legal lighting on the road. Think utility trailers, small boat trailers, landscape haulers, and light pop-up campers. If your trailer plugs into a 4-way flat and only needs lights, this is the connector that feeds it.\u003c\/p\u003e\n\u003cp\u003eBecause it's a replacement harness and not a universal splice-in kit, it's designed to connect to the towing wiring your vehicle already has. That keeps the install clean and keeps you out of the taillight wiring with a test light and a roll of electrical tape. Before you order, take two minutes to confirm your vehicle has a compatible factory towing connection and that the 118480 matches it. A harness that plugs straight in saves you an afternoon.\u003c\/p\u003e\n\u003cp\u003eOne thing to be clear about. A 4-way flat handles lights and ground only. It won't run electric trailer brakes, and it doesn't carry a reverse or a charge circuit. If you're towing something heavy enough to need electric brakes, you're looking at a brake controller and a 7-way connector instead. This part is for the light-duty end of towing, and for that it's exactly the right tool.\u003c\/p\u003e\n\u003cp\u003eTekonsha has been building trailer towing electrical for a long time, and they're a name you'll see on brake controls and wiring at just about every hitch shop. The 118480 carries that same reputation. Get the right connector on your vehicle, plug in your trailer, walk around and check that your lights blink and glow like they should, and you're ready to tow.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul class=\"nvn-features\"\u003e\n  \u003cli\u003e4-way flat output: powers running lights, left and right turn and brake signals, plus ground for basic trailer lighting\u003c\/li\u003e\n  \u003cli\u003eT-One replacement design: connects to your vehicle's existing towing wiring instead of a universal splice-in converter\u003c\/li\u003e\n  \u003cli\u003eStandard 4-way flat plug matches the most common light-duty trailer connector\u003c\/li\u003e\n  \u003cli\u003eBuilt as an OEM-style replacement harness for a clean, plug-in install\u003c\/li\u003e\n  \u003cli\u003eBacked by Tekonsha, a longtime name in trailer towing electrical\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"nvn-trust\"\u003e\n  \u003ch2\u003eWhy Buy from NVN Marine\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eAuthorized Tekonsha reseller, full manufacturer warranty\u003c\/li\u003e\n    \u003cli\u003eNMEA member and ABYC certified, advice from real boat techs\u003c\/li\u003e\n    \u003cli\u003eSame-day shipping before 3 PM ET on in-stock items\u003c\/li\u003e\n    \u003cli\u003eNY headquarters and Fort Lauderdale flagship retail store\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"nvn-faq\"\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat does the 4-way flat connector power?\u003c\/summary\u003e\n    \u003cp\u003eA 4-way flat carries four circuits: ground, running or taillights, left turn and brake, and right turn and brake. That covers legal lighting for a basic trailer. There's no separate circuit for electric brakes, reverse lights, or trailer battery charging.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs this a plug-in replacement or a splice-in kit?\u003c\/summary\u003e\n    \u003cp\u003eIt's built as a replacement for the OEM towing wiring harness, so it's designed to connect to the towing wiring your vehicle already has rather than tapping into your taillight circuits. Confirm your vehicle has a compatible factory towing connection before you order.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWill this work with electric trailer brakes?\u003c\/summary\u003e\n    \u003cp\u003eNo. A 4-way flat handles lights and ground only. Electric trailer brakes need a brake controller and a heavier connector like a 7-way. Use the 118480 for light-duty trailers that only need lighting.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat can I tow with a 4-way flat like this?\u003c\/summary\u003e\n    \u003cp\u003eSmall utility trailers, light boat trailers, landscape haulers, and light pop-up campers all run fine on a 4-way flat as long as they only need lighting and ground. If the trailer plug matches a 4-way flat, this connector feeds it.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat are the part number and UPC so I can confirm fit?\u003c\/summary\u003e\n    \u003cp\u003eThis is Tekonsha MPN 118480, UPC 016118073683. Since it's an OEM replacement harness, check it against your vehicle's factory towing connection before ordering to make sure it matches.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable class=\"nvn-specs\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth\u003eTitle\u003c\/th\u003e\n\u003ctd\u003e4-Way Flat Replacement For OEM Wiring Harness\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eTekonsha\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eManufacturer Part Number\u003c\/th\u003e\n\u003ctd\u003e118480\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eUPC\u003c\/th\u003e\n\u003ctd\u003e016118073683\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eProduct Line\u003c\/th\u003e\n\u003ctd\u003eT-One\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eConnector Type\u003c\/th\u003e\n\u003ctd\u003e4-Way Flat\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eHarness Type\u003c\/th\u003e\n\u003ctd\u003eOEM Replacement\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCircuits\u003c\/th\u003e\n\u003ctd\u003eGround, Running Lights, Left Turn\/Brake, Right Turn\/Brake\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"FAQPage\",\n    \"mainEntity\": [\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What does the 4-way flat connector power?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"A 4-way flat carries four circuits: ground, running or taillights, left turn and brake, and right turn and brake. That covers legal lighting for a basic trailer. There's no separate circuit for electric brakes, reverse lights, or trailer battery charging.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is this a plug-in replacement or a splice-in kit?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's built as a replacement for the OEM towing wiring harness, so it's designed to connect to the towing wiring your vehicle already has rather than tapping into your taillight circuits. Confirm your vehicle has a compatible factory towing connection before you order.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Will this work with electric trailer brakes?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"No. A 4-way flat handles lights and ground only. Electric trailer brakes need a brake controller and a heavier connector like a 7-way. Use the 118480 for light-duty trailers that only need lighting.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What can I tow with a 4-way flat like this?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Small utility trailers, light boat trailers, landscape haulers, and light pop-up campers all run fine on a 4-way flat as long as they only need lighting and ground. If the trailer plug matches a 4-way flat, this connector feeds it.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What are the part number and UPC so I can confirm fit?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"This is Tekonsha MPN 118480, UPC 016118073683. Since it's an OEM replacement harness, check it against your vehicle's factory towing connection before ordering to make sure it matches.\"\n            }\n        }\n    ]\n}\n\u003c\/script\u003e\n","brand":"TEKONSHA","offers":[{"title":"Default Title","offer_id":45065732849757,"sku":"2008826","price":69.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0299\/7266\/0317\/files\/ImageServerAPI_384273e1-00d1-48fc-ac4b-5de9a8815420.jpg?v=1789626939","url":"https:\/\/nvnmarine.com\/products\/tekonsha-118480-4-way-flat-replacement-wiring-harness","provider":"NVN Marine","version":"1.0","type":"link"}