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Running trailer wiring doesn’t have to mean cutting into factory circuits. The Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector plugs directly into the factory wiring behind the driver’s-side tail light. The included powered converter isolates the trailer load, so you get solid signal lighting without tapping or splicing any wires.
The harness uses factory-style connectors that fit right into existing junction points. Since it mounts behind trim panels near the rear lights, there’s no need to route wires across the vehicle. The connection stays hidden and protected once installed, leaving a clean finish that’s ready for towing right away.
Even if your vehicle didn’t come with a tow package, this kit has what you need. The included fuses plug into the correct slots to activate the lighting circuit and give you a fully functional 4-way connector for running, turn, and brake lights. In most cases no extra relay is needed—just follow the fuse placement as outlined in the instructions.
The 4-pole flat connector provides standard light functions—tail, turn, and brake signals—for small and mid-size trailers. Its powered converter keeps the vehicle’s sensitive electronics protected while delivering consistent output to the trailer lights every time you hook up.
Customer Satisfaction Score:
97% were satisfied with this product
3% of customers were not satisfied
Ratings & Reviews
David B.
7/14/2018
Sold the vehicle where it was originally installed but purchased a 2018 same vehicle and installed one in the new one as well. Installation was exactly the same on the 2018 and product works well.
Louis P.
5/14/2017
All is well. Happy customer.
Jay W.
5/12/2016
Great and flawless products, as always from etrailer.
Vern
5/16/2018
Very well built and no issues with the hitch or the wiring kit. I was missing a spade fuse in the kit but they sent one out to replace the one I installed.
Russ W.
7/6/2018
Cannot find a better set of wires.
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Condition: Like New
Notes: May have damaged packaging or minor cosmetic blemishes.
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Keato
11/18/2025
I’ve used it for bike racks and cargo racks and it works very well.