Tekonsha 118269 ModuLite HD 4-Way Flat Harness
Tekonsha 118269 ModuLite HD 4-Way Flat Harness — Product description
The Tekonsha 118269 is a 4-way flat replacement towing harness built around Tekonsha's Circuit Protected ModuLite HD module. It's a powered converter, so your trailer lights run off a separate supply instead of loading your vehicle's factory wiring. You get tail, brake, and turn signals at a standard 4-way flat plug, with built-in circuit protection keeping faults out of your truck.
If you're wiring up a trailer and want to keep your tow vehicle's factory electrical system out of harm's way, the Tekonsha 118269 is built for exactly that. It's a 4-way flat replacement harness that carries Tekonsha's Circuit Protected ModuLite HD module, so your trailer's lights pull power the smart way instead of loading down your vehicle's original wiring.
Here's what makes the ModuLite HD different from a plain splice-in converter. It's a powered module. Instead of drawing current for your trailer lamps straight through the vehicle's circuits, it pulls that power separately and switches it based on your turn, brake, and running-light signals. That keeps the load off your factory harness and off the sensitive control modules that don't like extra draw. And if a bulb shorts out or a trailer plug gets wet and faults, the built-in circuit protection steps in instead of letting the trouble travel back into the truck.
This one is designed to replace the OEM towing harness rather than tap into it, so you're connecting a clean, purpose-built assembly that finishes at a standard 4-way flat connector. That 4-way flat is the workhorse fitting for utility trailers, small boat trailers, landscape trailers, and most single-axle setups. Left turn, right turn, brake, and tail, all in one plug your trailer already knows how to talk to.
Fitment is application-specific, so check that the 118269 is the right harness for your year, make, and model before you order. Once it's the correct part, the install is straightforward. Route the harness, make your connections, mount the module somewhere dry and protected, and you're ready to plug in. We stock a lot of Tekonsha towing gear and we've wired up more trailers than we can count. So if you're not sure this is the right harness for your rig, ask us before you buy and we'll point you at the correct part.
Key Features
- Circuit Protected ModuLite HD module: powered converter that runs trailer lights off a separate supply and shields your vehicle's factory wiring from overloads and shorts.
- 4-way flat output connector: the standard trailer fitting for tail, brake, and left and right turn signals on utility, boat, and single-axle trailers.
- OEM harness replacement design: installs in place of the factory towing harness instead of splicing into your original vehicle wiring.
- Powered switching: the module carries the lighting load so your vehicle's control modules and fuses aren't stressed by the trailer.
- Genuine Tekonsha part 118269: from the industry leader in trailer brake controls and towing electrical gear.
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 | 4-Way Flat Replacement For OEM Wiring Harness With Circuit Protected ModuLite HD Module |
|---|---|
| Brand | Tekonsha |
| Manufacturer Part Number | 118269 |
| UPC | 016118122480 |
| Connector Type | 4-Way Flat |
| Converter Module | Circuit Protected ModuLite HD |
| Circuit Protection | Yes |
| Application | OEM Towing Harness Replacement |
| Product Type | Trailer Wiring Harness |
Frequently asked questions
What does the ModuLite HD module actually do?
It's a powered converter. Instead of pulling your trailer's lighting current through the vehicle's original circuits, the module draws power separately and switches the tail, brake, and turn signals on command. That keeps the load off your factory wiring and off sensitive control modules.
What connector does the 118269 provide?
A standard 4-way flat. That covers tail, brake, and left and right turn signals, which is what most utility trailers, small boat trailers, and single-axle trailers use.
Does this replace my factory towing harness?
Yes. It's built as a replacement for the OEM wiring harness rather than a tap into it, so you connect the purpose-built assembly and finish at the 4-way flat plug. Confirm it's the correct part for your specific vehicle before installing.
Why does it say circuit protected?
The module has built-in circuit protection. If a trailer bulb shorts or a plug faults, the protection steps in so the problem doesn't travel back into your vehicle's electrical system.
Do I need to splice into my vehicle's wiring?
This harness is designed to take the place of the factory towing harness, so a correct application connects to your vehicle's existing towing provisions rather than requiring you to cut into the main wiring. Always follow the included instructions for your specific vehicle.
Will this fit my vehicle?
Fitment is application-specific. Check the 118269 against your year, make, and model before you order. If you're not sure, send us your vehicle details and we'll confirm it's the right harness.
