Tekonsha 118698 T-One ModuLite HD Connector
Tekonsha 118698 T-One ModuLite HD Connector — Product description
The Tekonsha 118698 T-One connector is the clean way to wire a trailer to a specific tow vehicle. It plugs into your factory harness, no cutting, and its Circuit Protected ModuLite HD module pulls lighting power straight from the battery so your truck's electronics stay protected. You get a weatherproof 4-way flat hookup that looks factory.
If you tow with the same truck or SUV year-round, the Tekonsha 118698 T-One connector is the tidy way to get a trailer plug on it. This is a vehicle-specific harness. It plugs straight into the factory tow connectors already tucked behind your bumper or in the wheel well, so there's no cutting into taillight wires and no splicing. Match the part number to your vehicle and it goes in like the factory meant it to.
The heart of the kit is the Circuit Protected ModuLite HD module. Here's why that matters. A cheap wiring job taps your vehicle's taillight circuits directly, and the trailer's bulbs pull current right through your truck's electronics. The ModuLite converter doesn't do that. It draws the trailer's lighting power straight from the battery and uses the vehicle's signals only to switch the lights on and off. Your factory wiring stays isolated. On modern vehicles with sensitive body control modules, that isolation is the difference between a hookup that lasts and one that throws dash faults.
The HD part is the circuit protection. If the trailer wiring shorts out, a road hazard, a pinched wire, a corroded connector, the module's self-resetting protection trips instead of frying anything. Clear the fault and it comes right back. It's a one-piece weatherproof module, so it shrugs off the spray and grime that lives under a bumper.
Out the back you get a standard 4-way flat connector. That's your ground, running lights, and left and right turn and brake signals. It's the right hookup for utility trailers, small boat trailers, and campers that run lights only, no electric brakes. If your trailer has electric brakes, you'll want a different setup with a dedicated brake output.
One thing to nail down before you order: fit. Tekonsha builds the 118-series T-One connectors for specific vehicles, and 118698 fits a particular set of year, make, and model combinations. Send us your vehicle details and we'll confirm this is the right part number for it. Get that right and the install is a ten-minute job with hand tools.
Key Features
- Standard 4-way flat output for running lights, turn signals, and brake lights
- Circuit Protected ModuLite HD module draws trailer lighting power directly from the battery, keeping factory wiring isolated
- Self-resetting circuit protection trips on a trailer short instead of damaging vehicle electronics
- T-One design plugs into factory tow connectors with no cutting or splicing
- One-piece weatherproof module built for under-bumper spray and grime
- Vehicle-specific fit, verify part number 118698 against your year, make, and model
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 | 118698 |
| UPC | 016118145519 |
| Connector Type | 4-Way Flat |
| Module | Circuit Protected ModuLite HD |
| Harness Type | T-One vehicle-specific plug-in |
| Power Source | Powered converter, draws from vehicle battery |
| Circuit Protection | Self-resetting |
| Installation | Plug-in, no cutting or splicing |
Frequently asked questions
What does the ModuLite HD module actually do?
It's a powered converter. Instead of running trailer lighting current through your vehicle's taillight circuits, it pulls that power straight from the battery and uses the vehicle signals only to switch the lights. That keeps your factory wiring and body control module isolated from the trailer.
Do I have to cut or splice into my vehicle wiring?
No. The T-One design plugs into the factory tow connectors already in your vehicle, usually behind the bumper or in the wheel well. No cutting, no splicing, no tapping taillight wires.
What connector do I get on the trailer side?
A standard 4-way flat. That covers ground, running lights, and the left and right turn and brake signals, which is what most utility, small boat, and lights-only trailers use.
Does this power electric trailer brakes?
No. A 4-way flat has no dedicated brake output. If your trailer has electric brakes you'll need a setup with a brake circuit and a controller. Send us your trailer details and we'll point you to the right one.
Why is it called circuit protected?
The HD module has self-resetting protection built in. If the trailer wiring shorts, from a pinched wire or a corroded connector, the protection trips instead of frying anything. Clear the fault and it resets on its own.
Will 118698 fit my truck or SUV?
Tekonsha builds the 118-series T-One connectors for specific vehicles, so fit depends on your year, make, and model. Send us those details before you order and we'll confirm 118698 is the correct part number for your vehicle.
