Tekonsha T-One Connector with Circuit Protected ModuLite HD Module
Tekonsha T-One Connector with Circuit Protected ModuLite HD Module — Product description
The Tekonsha 118801 gives you a factory-style trailer wiring hookup that plugs right into your tow vehicle's harness. It pairs a vehicle-specific T-One connector with the Circuit Protected ModuLite HD converter, so your trailer lights get clean, isolated power without cutting a single wire.
The Tekonsha 118801 pairs a vehicle-specific T-One connector with the Circuit Protected ModuLite HD module, so you get factory-style trailer wiring without cutting into your tow vehicle's harness. The T-One end plugs straight into your vehicle's existing wiring connector. No splicing, no scotch-locks, no guessing which wire is which.
Here's what the ModuLite HD part does. It's a powered converter, which means it doesn't pull your trailer's lights through the vehicle's own circuits. Instead it draws current directly from the battery and uses your vehicle's signals only to tell the module when to fire the turn, brake, and tail lights. That keeps the load off your factory wiring, which matters a lot on newer vehicles where the body control module gets fussy about extra draw. The trailer side gives you a standard 4-way flat connector, ready for most boat and utility trailers.
The Circuit Protected upgrade is the reason to pick this one over a bare converter. It has self-resetting protection built in, so a short on the trailer side, a pinched wire, a corroded ground, a bad bulb, won't take out the module or feed a fault back into your truck. The light just drops out until you fix the problem, then the circuit resets itself. If you've ever towed a trailer with flaky ground wiring, you know why that's worth the extra few dollars.
The whole module is a sealed one-piece design, so it handles rain, road spray, and the wet you get backing a boat trailer down the ramp. Mount it up under the dash or in the rear, run the harness, plug it in, done. Most installs take under an hour with basic hand tools.
One important note: T-One connectors are vehicle-specific. The 118801 fits a particular set of years, makes, and models, so check that this part number matches your vehicle before you order. If you're not sure, send us your year, make, and model and we'll confirm the right Tekonsha connector for your rig.
Key Features
- T-One vehicle-specific connector plugs into your factory wiring, no splicing or wire cutting
- Circuit Protected ModuLite HD converter with self-resetting protection against shorts and bad grounds
- Powered converter draws from the vehicle battery, keeping trailer loads off your factory circuits
- Standard 4-way flat trailer output fits most boat and utility trailers
- Sealed one-piece module stands up to rain and boat-ramp spray
- Installs in under an hour with basic hand tools
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 | 118801 |
| UPC | 016118153941 |
| Connector Type | T-One vehicle-specific plug-in |
| Converter Module | Circuit Protected ModuLite HD |
| Power Source | Direct vehicle battery feed (powered converter) |
| Trailer Output | 4-Way Flat |
| Circuit Protection | Self-resetting |
| Installation | No-splice plug-in |
Frequently asked questions
How is this different from a standard ModuLite converter?
This one adds self-resetting circuit protection. If a trailer light shorts or a ground goes bad, the module drops that circuit instead of frying itself or feeding a fault back into your vehicle, then resets once the fault clears. A bare converter has no such safeguard.
Will the 118801 fit my vehicle?
T-One connectors are vehicle-specific, and the 118801 fits a particular set of years, makes, and models. Check that this exact part number matches your vehicle before ordering. Send us your year, make, and model and we'll confirm it's the right Tekonsha connector.
What connector does the trailer side use?
It outputs a standard 4-way flat connector, which covers turn, brake, tail, and ground for most boat and utility trailers.
Do I have to cut or splice any wires?
No. The T-One end plugs directly into your vehicle's existing wiring connector, so there's no cutting, splicing, or scotch-locks. You do run the harness and mount the module, but the electrical connection is plug-in.
Does this work for a boat trailer?
Yes. The 4-way flat output matches most boat trailers, and the sealed one-piece module holds up to the water and spray you get at the ramp.
Why choose a powered converter over a non-powered one?
A powered converter draws current straight from the battery and uses the vehicle's signals only as triggers. That keeps the trailer's lighting load off your factory circuits, which is easier on the wiring in newer vehicles that watch for extra electrical draw.
