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The Curt Powered Tail Light Converter with 4-Pole Flat Trailer Connector draws power directly from the vehicle battery, not from the tail light circuits. That means the trailer lights get full, consistent power without putting extra load on your vehicle’s wiring. It’s a dependable way to keep your running lights, turn signals, and brake lights bright and trouble-free every time you tow.
Modern vehicles use different wiring styles like Pulse Width Modulation or multiplex systems. This converter is built to handle those signals correctly and translate them for standard trailer lighting. Whether you’re connecting to LEDs or traditional bulbs, it sends the right signal every time so everything works together as it should.
This harness is a universal splice-in setup that works on a wide range of vehicles. You simply connect the color-coded wires—yellow for left turn, green for right turn, red for brake, and brown for tail—to your corresponding light circuits. The included ground and power leads complete the system for a solid electrical connection.
By using its own fused power line straight to the battery, the harness isolates trailer load from sensitive vehicle electronics. That prevents voltage spikes or drain on the factory lighting circuits. It’s a simple but smart safeguard that keeps both your vehicle and trailer wiring safe from overloads or faults.
The 4-pole flat connector provides the basic trailer functions—running lights, brake lights, and turn signals—with one easy plug. Once installed, you can hook up most small trailers or hitch-mounted accessories with lights just by plugging in and going.
Customer Satisfaction Score:
85% were satisfied with this product
15% of customers were not satisfied
Ratings & Reviews
Burak A.
4/7/2026
The wiring still works without any issues after a year. I have used it total of 10-15 times with my small trailer.
Steveu.
7/21/2026
Great so far. The electronic converter box has proven to be durable. Note: my vehicle is actually a 2003 Toyota Camry.
Lazer S.
7/21/2026
Mike L.
9/16/2026
The wiring harness is a universal fit, due to the fact that nobody currently offers a plug and play option for your vehicle. Because of this, there aren't any vehicle-specific install instructions for your particular vehicle. However, you can use a circuit tester like # PTW2993 to determine which wire carries which circuit.
Mike L.
6/30/2026
Great job Jill, I'm glad to hear the video helped!
Mike L.
7/28/2026
The # C59236 is a universal-fit harness that will work on just about any vehicle although it'll need to be spliced into place. For a plug and play option, use # C62VR.
Do you have a question about this Custom Fit Vehicle Wiring?
Condition: Like New
Notes: May have damaged packaging or minor cosmetic blemishes.
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Brooke M.
4/23/2025
That's great to hear, Burak! I'm impressed with your install time. Do you work with cars a lot?