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Wiring for trailer lights doesn’t have to mean splicing into your factory wiring. This Curt T-Connector plugs directly into your vehicle’s existing taillight connectors to create a 4-pole flat trailer connector. No cutting, no tapping into circuits—just plug it in and it’s ready to use.
A good ground makes all the difference in trailer lighting. The harness includes a dedicated ground wire that attaches to bare metal for a solid, consistent connection. Using dielectric grease on the terminals keeps moisture out, helping prevent corrosion and keeping your lights working reliably over the long haul.
The 4-flat connector provides all the essentials—running lights, left and right turn signals, and brake lights. It’s the standard setup for most small to mid-size trailers, so you can plug in and tow with confidence knowing your lights will match up perfectly every time.
Once installed, the harness tucks neatly out of sight near the hitch area. That hidden, factory-style fit keeps wires protected and gives the setup a clean look with no loose cables hanging down. It’s a straightforward upgrade that looks like it came with the vehicle right from the start.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Today we're going to be taking a look at part number C55534 this is the Curt T-Connector Vehicle Wiring Harness. It's going to provide your four pole flat trailer connector at the back of your vehicle to power you trailer's signal lights. It is compatible with 5 pole, 6 pole, and 7 pole adapters. Those adapters are sold separately. This product is going to fit certain years and models of the Chrysler 300, the Dodge Challenger and the Dodge Charger. Here on the four way flat connector, it's going to include a dust cap.
That way when the connector's not being used, those connection points can be covered up. The benefit of this system is it is going to connect quickly and easily, you don't have to worry about cutting or splicing any of your wires. All you have to do is locate your connection points in your rear cargo area, the detailed instructions are going to indicate exactly where those points are. The side with the yellow wire, this is going to go to the driver's side of the vehicle, the side with the green wire is going to go to the passenger's side of the vehicle. You've got plenty of wiring to work with. It's a wishbone style, so right here you have the four way flat connector your green and white wires are going to be separate from the brown and yellow wires.
That's split all the way. Again, green and white goes to the passenger's side, brown and yellow goes to the driver's side. These connection points are going to match up perfectly with the connection points on the vehicle. They've got the locking tabs for a nice, tight secure connection. Once you have those plugged in, you'll need to locate a suitable grounding point and make your ground connection. That's going to be your white wire with the ring terminal attached to it.
You can make that ground connection with the included self tapping screw. We want to make sure you get that to a nice, clean metal surface. Once your installation is complete, the four way connectors are going to be stowed in an out of the way location within the rear cargo area. Then you can use the included zip ties to to secure the access wiring up and out of the way or take up any slack in your wiring. It's also recommended that you use a small amount of dielectric grease on all electrical connections like the plugs on the vehicle and the four pole connector itself to help prevent any type of corrosion from settling in. That's going to do it for today's look at part number C55534..
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