Tekonsha 118836 T-One Connector, Ford Bronco Tow Harness

If you've got a Ford Bronco and something to tow behind it, this is the wiring you want. The Tekonsha 118836 T-One connector is a custom-fit harness built specifically for the Bronco, so it plugs straight into the factory wiring under the vehicle. No splicing. No taping wires together and hoping they hold up. You find the factory connector, click this one into place, and you've got a 4-way flat trailer plug ready to go.

That's the whole point of the T-One system. Tekonsha designs a separate harness for each vehicle, and the 118836 is the one that matches the Bronco's connector and wiring layout. Because it's vehicle-specific, there's no guesswork about which wire does what. It also means the connector body is shaped to sit where the factory plug already lives, so nothing hangs loose or rubs on a moving part. Everything lines up the way the factory intended.

What makes this version worth the money is the upgraded circuit-protected ModuLite HD module. Here's why that matters. A basic tail-light converter pulls the power for your trailer lights straight off the vehicle's own lighting circuits. That works until you add a heavier load, and then you're stressing wiring that was never meant to carry it. The ModuLite HD does it differently. It draws power directly from the vehicle battery and uses the tail-light signal only to tell the trailer lights when to turn on. Your Bronco's circuits stay protected. The trailer lights get clean, dedicated power.

The module is circuit protected, so a short at the trailer plug or a bad ground on the trailer won't send a fault back into the Bronco's electrical system. If you've ever backed a trailer into a puddle and watched a fuse pop, you'll appreciate that. The whole thing is a solid, weatherproof, one-piece build, which is what you want for something that lives underneath the vehicle in road spray and salt.

The output is a standard 4-way flat connector. That covers the basics on most small trailers: running and tail lights, left turn and brake, right turn and brake, plus a ground. So it's the right match for utility trailers, small enclosed cargo trailers, teardrop campers, landscape trailers, and most single-axle setups that run flat-four lighting. If your trailer already has a 4-flat plug, you're plug-and-play.

Install is genuinely a driveway job. Most people have it done in well under an hour. You locate the factory tow connector, unplug the cap or dummy plug, snap the T-One in line, mount the module somewhere protected, and run the 4-flat pigtail to where it needs to sit at the bumper. The kit comes with what you need to get the job done. If you're comfortable with a zip tie and a socket set, you can handle this.

A couple of honest notes. This is a lighting connector, not a brake control harness. It handles trailer lights, not electric trailer brakes. If you're towing something with its own brakes, that's a separate brake controller conversation. And it's built for the Bronco specifically, so double-check that 118836 is the right part number for your model year before you order. Tekonsha builds the T-One line around exact vehicle fitment, and that's exactly why it installs so cleanly when you've got the right one.

For a Bronco owner who tows now and then, or every weekend, this is the setup that keeps the trailer lit and the truck's wiring safe. Tekonsha has been building trailer brake controls and towing electrics for a long time, and the ModuLite HD is their answer to the weak point in cheap converters. Keep the plug capped when you're not hooked up and it'll be ready the next time you drop a hitch on the ball. Wire it once, do it right, and forget about it.