{"product_id":"tekonsha-118651-t-one-modulite-hd-trailer-harness","title":"Tekonsha T-One Connector with Circuit Protected ModuLite HD Module","description":"\u003cp class=\"nvn-hero\"\u003eThe Tekonsha 118651 T-One connector wires your tow vehicle to a 4-way flat trailer plug without cutting or splicing a single wire. Its Circuit Protected ModuLite HD module converts your vehicle's stop and turn signals and shields the electrical system while it does it. A clean, factory-looking hookup for towing your boat trailer.\u003c\/p\u003e\n\n\u003cdiv class=\"nvn-description\"\u003e\n\u003cp\u003eTowing your boat starts with one connection your tow vehicle has to make to the trailer, and that's exactly the job this Tekonsha T-One kit handles. It's a plug-in wiring harness that taps into your vehicle's factory towing connector with no cutting and no splicing. The heart of it is the Circuit Protected ModuLite HD module, which takes your vehicle's separate turn and stop signals and converts them into the combined signal a flat trailer connector needs.\u003c\/p\u003e\n\u003cp\u003eHere's why we like the T-One design. Most trailer wiring headaches start with splicing into a vehicle's wiring loom, which invites corrosion, voltage drops, and blown fuses down the road. This kit skips all of that. You find the factory harness connector under the vehicle, unplug it, insert the T-One in between, and plug the factory connector back in. The module hangs off that junction and gives you a clean 4-way flat trailer plug at the bumper. Most folks get it done in under an hour with basic hand tools. You're not chasing wiring diagrams or crimping connectors in the dark.\u003c\/p\u003e\n\u003cp\u003eThe ModuLite HD module is the part that earns its keep. It's a powered converter, so instead of pulling trailer lighting current through your vehicle's delicate signal wires, it draws from a dedicated power feed and switches the trailer lights itself. That keeps your vehicle's factory bulb-out warnings and body computer happy. And it's circuit protected. If your trailer wiring shorts or a bulb draws too much, the module protects the vehicle side instead of popping a factory fuse you'd have to hunt down. It handles up to 4.2 amps on the stop and turn circuit and up to 7.5 amps on the tail light circuit, which covers a standard single or tandem-axle boat trailer.\u003c\/p\u003e\n\u003cp\u003eOne thing to know up front. This is a vehicle-specific T-One, part number 118651. Tekonsha builds these to match a particular vehicle's factory connector, so before you order, confirm 118651 is the right fit for your year, make, and model. The plug has to match the connector under your vehicle for the no-splice install to work the way it should. If you're not sure, send us your tow vehicle details and we'll check it for you.\u003c\/p\u003e\n\u003cp\u003eSo who's this for? Anyone towing a boat, utility, or small cargo trailer that uses a 4-way flat connector and wants a reliable, factory-looking hookup. It's not a brake controller, and it won't run electric trailer brakes on its own, so if your trailer has surge or electric brakes, plan for that part separately. But for wiring your trailer's running lights, brake lights, and turn signals to your tow vehicle the right way, this is the clean path. It also plays nice with both incandescent and LED trailer lights, since the powered module does the switching. A lot of boaters tow the same rig for a decade, and getting the light hookup right from the start saves you the roadside troubleshooting nobody wants on the way to the ramp.\u003c\/p\u003e\n\u003cp\u003eThere's also something to be said for how factory this looks when you're done. Because the T-One plugs into the existing harness and the flat connector tucks up near the hitch, you don't end up with a bundle of taped wires hanging under the bumper. It's the kind of install that looks like the vehicle came from the dealer ready to tow. And when you sell the vehicle later, the wiring unplugs just as cleanly as it went in, leaving the factory harness untouched.\u003c\/p\u003e\n\u003cp\u003eThe whole assembly is weatherproof and built as a solid one-piece unit, which matters when it lives under a vehicle catching road spray and salt every trip. We tell every customer the same thing. Hit the connector with a little dielectric grease at the plug points, keep the flat connector capped when it's not in use, and this'll give you years of trouble-free towing. It's a small part that quietly does an important job every single time you back the boat down the ramp.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul class=\"nvn-features\"\u003e\n  \u003cli\u003eCircuit Protected ModuLite HD module isolates and protects your vehicle's wiring from trailer faults\u003c\/li\u003e\n  \u003cli\u003e4.2 amp stop and turn capacity plus 7.5 amp tail light capacity for standard trailer lighting\u003c\/li\u003e\n  \u003cli\u003ePlug-in T-One design taps the factory tow connector with no cutting, splicing, or taping\u003c\/li\u003e\n  \u003cli\u003ePowered converter draws from a dedicated feed so trailer lights don't load your vehicle's signal wires\u003c\/li\u003e\n  \u003cli\u003eVehicle-specific part number 118651 for a factory-fit, plug-and-play install\u003c\/li\u003e\n  \u003cli\u003eDelivers a clean 4-way flat trailer connector at the bumper\u003c\/li\u003e\n  \u003cli\u003eSolid, weatherproof, one-piece construction built to live under the vehicle\u003c\/li\u003e\n  \u003cli\u003eWorks with both incandescent and LED trailer lights thanks to the powered module\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\u003eDo I have to cut or splice any wires to install this?\u003c\/summary\u003e\n    \u003cp\u003eNo. That's the whole point of the T-One design. You locate your vehicle's factory tow harness connector, unplug it, insert the T-One in between, and plug the factory connector back in. No cutting, splicing, or taping of vehicle wires.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat does the ModuLite HD module actually do?\u003c\/summary\u003e\n    \u003cp\u003eIt's a powered converter that takes your vehicle's separate stop and turn signals and combines them into the single signal a flat trailer connector uses. Because it's powered from a dedicated feed, it also isolates and protects your vehicle's electrical system from trailer wiring faults.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow much trailer lighting load can it handle?\u003c\/summary\u003e\n    \u003cp\u003eUp to 4.2 amps on the stop and turn circuit and up to 7.5 amps on the tail light circuit. That covers a standard single or tandem-axle boat trailer running normal lighting.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWill part number 118651 fit my vehicle?\u003c\/summary\u003e\n    \u003cp\u003eThe T-One is vehicle-specific, so 118651 is built to plug into a particular vehicle's factory connector. Confirm your year, make, and model before ordering. If you're not sure, send us your tow vehicle details and we'll check the fit for you.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDoes this include a brake controller?\u003c\/summary\u003e\n    \u003cp\u003eNo. This kit wires your trailer's running lights, brake lights, and turn signals. It does not power electric trailer brakes. If your trailer has electric or surge brakes, you'll need to address that separately.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWill it work with LED trailer lights?\u003c\/summary\u003e\n    \u003cp\u003eYes. Because the ModuLite HD is a powered converter that switches the lights itself, it works with both incandescent and LED trailer lighting.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat kind of trailer connector do I end up with?\u003c\/summary\u003e\n    \u003cp\u003eA 4-way flat connector at the vehicle's bumper, which is the standard hookup for most boat, utility, and small cargo trailers.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDoes it really protect my vehicle's electrical system?\u003c\/summary\u003e\n    \u003cp\u003eYes. The module is circuit protected, so if the trailer wiring shorts or draws too much current, it protects the vehicle side rather than blowing a factory fuse. That's the upgrade the HD module brings.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow long does the install take?\u003c\/summary\u003e\n    \u003cp\u003eMost people finish in under an hour with basic hand tools, since there's no wiring to cut. Access to the factory harness connector under the vehicle is usually the only fiddly part.\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\u003eT-One Connector Assembly With Upgraded Circuit Protected ModuLite HD Module\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\u003e118651\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eUPC\u003c\/th\u003e\n\u003ctd\u003e016118131925\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eConverter Module\u003c\/th\u003e\n\u003ctd\u003eCircuit Protected ModuLite HD\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eStop \/ Turn Light Capacity\u003c\/th\u003e\n\u003ctd\u003e4.2 Amps\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eTail Light Capacity\u003c\/th\u003e\n\u003ctd\u003e7.5 Amps\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCircuit Protection\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eConverter Type\u003c\/th\u003e\n\u003ctd\u003ePowered\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eVehicle Connection\u003c\/th\u003e\n\u003ctd\u003ePlug-in T-One, no splicing\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eTrailer Connector\u003c\/th\u003e\n\u003ctd\u003e4-Way Flat\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eFit Type\u003c\/th\u003e\n\u003ctd\u003eVehicle-specific\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eInstallation\u003c\/th\u003e\n\u003ctd\u003eNo cutting, splicing, or taping\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eConstruction\u003c\/th\u003e\n\u003ctd\u003eOne-piece weatherproof\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\": \"Do I have to cut or splice any wires to install this?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"No. That's the whole point of the T-One design. You locate your vehicle's factory tow harness connector, unplug it, insert the T-One in between, and plug the factory connector back in. No cutting, splicing, or taping of vehicle wires.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What does the ModuLite HD module actually do?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's a powered converter that takes your vehicle's separate stop and turn signals and combines them into the single signal a flat trailer connector uses. Because it's powered from a dedicated feed, it also isolates and protects your vehicle's electrical system from trailer wiring faults.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How much trailer lighting load can it handle?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Up to 4.2 amps on the stop and turn circuit and up to 7.5 amps on the tail light circuit. That covers a standard single or tandem-axle boat trailer running normal lighting.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Will part number 118651 fit my vehicle?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"The T-One is vehicle-specific, so 118651 is built to plug into a particular vehicle's factory connector. Confirm your year, make, and model before ordering. If you're not sure, send us your tow vehicle details and we'll check the fit for you.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Does this include a brake controller?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"No. This kit wires your trailer's running lights, brake lights, and turn signals. It does not power electric trailer brakes. If your trailer has electric or surge brakes, you'll need to address that separately.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Will it work with LED trailer lights?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. Because the ModuLite HD is a powered converter that switches the lights itself, it works with both incandescent and LED trailer lighting.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What kind of trailer connector do I end up with?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"A 4-way flat connector at the vehicle's bumper, which is the standard hookup for most boat, utility, and small cargo trailers.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Does it really protect my vehicle's electrical system?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. The module is circuit protected, so if the trailer wiring shorts or draws too much current, it protects the vehicle side rather than blowing a factory fuse. That's the upgrade the HD module brings.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How long does the install take?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Most people finish in under an hour with basic hand tools, since there's no wiring to cut. Access to the factory harness connector under the vehicle is usually the only fiddly part.\"\n            }\n        }\n    ]\n}\n\u003c\/script\u003e\n","brand":"TEKONSHA","offers":[{"title":"Default Title","offer_id":45060528210013,"sku":"2008498","price":108.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0299\/7266\/0317\/files\/ImageServerAPI_8e19e52f-9bc7-466d-a0cd-dc9dedf51ce7.jpg?v=1789529313","url":"https:\/\/nvnmarine.com\/products\/tekonsha-118651-t-one-modulite-hd-trailer-harness","provider":"NVN Marine","version":"1.0","type":"link"}