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Getting trailer lights working doesn’t have to mean cutting or splicing wires. This Curt T-Connector plugs directly into the factory wiring behind the trim panel, giving you a 4-pole flat connector for your trailer lights. Everything fits where it should, so the install stays clean and reliable with no guesswork.
The harness includes a powered converter that uses a 12-gauge hot lead run to the battery. That setup keeps the trailer load off your vehicle’s sensitive lighting circuits, protecting them from overload and signal errors. It’s a smart design that ensures the trailer lights work right every time you hook up.
This setup hides neatly behind the interior trim panel. Once installed, the wiring stays protected from damage and out of sight when not in use. The connectors match factory plugs behind the panel, so it looks like it came built into the vehicle from day one.
The 4-flat connector covers running lights, turn signals, and brake lights—everything you need for small to mid-size trailers. It’s a common connection type that works with most trailer wiring adapters if you want to add a 7-way down the road.

When routing the power wire, avoid the exhaust, sharp edges, and any moving parts. Use wire ties to secure the wire out of the way. The hot lead must be run directly to the vehicle battery.
Customer Satisfaction Score:
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Ratings & Reviews

Gwendolyn Y.
5/2/2025
Now that the hard stuff is out of the way, you can get to towing! Going to be towing anything fun, Jim?

Victoria B.
9/23/2019
When installing a trailer hitch, it is important to make sure to use a torque wrench to torque the bolts down to the specifications stated in the instructions to ensure the hitchs integrity.

Mike L.
11/29/2018
Years ago, the car manufacturers used wire of sufficient gauge that the additional power needed for trailer lighting was drawn through the vehicles taillight circuits without issue. As the complexity of vehicle wiring systems and the price of copper increased, smaller gauge wire started being used. The result of this is that the power needed for trailer lights now must be drawn directly from the vehicle battery. This does indeed make for a more complicated installation, but this manner of connection has the huge benefit of keeping the complicated and expensive to repair vehicle lighting isolated from the trailer wiring. As trailer wiring is more exposed to road hazards, this is a good thing.
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Andrew
6/22/2025
Been working great but just realized I put 2008 but should have said 2018 HRV