Tekonsha T-One Connector w/ ModuLite HD Module | 118887
Tekonsha T-One Connector w/ ModuLite HD Module | 118887 — Product description
Tekonsha's T-One Connector Assembly is the clean way to wire your trailer lights without cutting into your tow vehicle's factory harness. This version pairs the plug-in T-connector with the upgraded, circuit-protected ModuLite HD module, so trailer power pulls straight from the battery instead of loading down your vehicle's own lighting circuits.
The Tekonsha T-One Connector Assembly is a custom-fit trailer wiring harness built around the upgraded, circuit-protected ModuLite HD module. The T-One side plugs directly into your tow vehicle's existing wiring using the factory connectors, so on most applications there's no cutting, no splicing, and no guessing at which wire does what. You plug it in, route the harness back to the bumper, and you've got a 4-way flat connector ready for the trailer.
Here's what the ModuLite HD part actually does. Instead of tapping your vehicle's own lighting circuits to run the trailer lights, the module pulls power straight from the battery and uses your vehicle's signals only to tell it when to fire. That keeps the extra load of the trailer lamps off the factory wiring, which matters on newer vehicles where the body control module doesn't like seeing current it wasn't expecting. Your turn signals, brake lights, and running lights on the trailer get clean, full-strength power.
The upgraded, circuit-protected piece is the real difference between this and a plain converter. The module has built-in circuit protection, so a short at the trailer connector or an overloaded circuit won't cook the module or feed a fault back into the truck. If something downstream goes wrong, the protection catches it. That's the kind of thing you don't think about until a trailer plug picks up road grime and salt.
This is the right harness if you're setting up a vehicle to tow a small utility trailer, a boat trailer, or anything running standard 4-way flat lighting. It's a wiring connector and converter, not a brake controller, so it handles your trailer lights and ground but won't operate electric trailer brakes on its own. And if you're not sure it's the exact fit for your year, make, and model, give us a shout before ordering and we'll confirm it.
Key Features
- Plug-in T-One connector mates to your vehicle's factory tow wiring, no cutting or splicing on most applications
- Circuit-protected ModuLite HD module guards against shorts and overloads at the trailer connector
- Powered converter draws trailer-light current from the battery, keeping the extra load off your vehicle's factory circuits
- Outputs a standard 4-way flat trailer connector for running, brake, and turn-signal lights
- Uses the vehicle's lighting signals only for switching, so factory lighting monitors stay happy
- Genuine Tekonsha part number 118887, backed by the manufacturer warranty
Why Buy from NVN Marine
- Authorized Tekonsha reseller, full manufacturer warranty
- NMEA member and ABYC certified, advice from real boat techs
- Same-day shipping before 3 PM ET on in-stock items
- NY headquarters and Fort Lauderdale flagship retail store
Technical specifications
| Title | T-One Connector Assembly With Upgraded Circuit Protected Modulite HD Module |
|---|---|
| Brand | Tekonsha |
| Manufacturer Part Number | 118887 |
| UPC | 016118166361 |
| Module | ModuLite HD, circuit protected |
| Connector Type | Plug-in T-One |
| Trailer Connector | 4-Way Flat |
| Converter Type | Powered, draws from vehicle battery |
| Function | Trailer light wiring and converter |
Frequently asked questions
Does this include a brake controller?
No. This is a lighting connector and powered converter only. It runs your trailer's running, brake, and turn-signal lights, but it won't operate electric trailer brakes. For those you'd add a separate brake controller.
Do I have to cut any wires to install it?
On most applications, no. The T-One side plugs into your tow vehicle's existing factory connectors, so there's no splicing and no guessing at wire colors. Route the harness to the bumper and you're set.
What kind of trailer plug does it give me?
A standard 4-way flat connector, which covers running lights, brake lights, and turn signals on most small trailers, boat trailers, and utility trailers.
Why a powered converter instead of just splicing into the lights?
The ModuLite HD pulls trailer-light power straight from the battery and uses the vehicle's signals only to switch it. That keeps the extra current off your factory circuits, which newer vehicles with lighting monitors are picky about.
What does circuit-protected mean on this module?
The module has built-in protection, so a short or an overload at the trailer connector won't damage the module or push a fault back into the vehicle's wiring. It's a good safeguard against a corroded or shorted trailer plug.
Will this fit my vehicle?
T-One connectors are matched to specific years, makes, and models. Check your fitment before ordering, or send us your vehicle details and we'll confirm this is the right harness for it.
