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Wiring a trailer can be a hassle, but this Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector keeps it simple. It plugs directly into the vehicle’s existing tail light wiring, so there’s no cutting or splicing needed. Once connected, it gives you a ready-to-use 4-flat output for running, turn, and brake lights.
This harness uses a powered converter that draws power directly from the vehicle battery through a dedicated 12-volt line. That setup keeps trailer light power separate from the vehicle’s tail light circuits, which helps prevent overloads or interference with sensitive electronics. It also means your trailer lights get consistent power even when loaded with LED lighting.
LED trailer lights can trip up some wiring kits, but this one is confirmed to be compatible. The Curt T-Connector #C56214 sends clean signals for turn, brake, and running lights so LED trailers perform just like they should. There’s virtually no extra amp draw on the vehicle circuits, making it a solid match for modern lighting setups.
Each side of the harness is clearly labeled with color-coded wires—red and yellow on the driver’s side, green and white on the passenger side—for an easy match-up. A good ground connection to clean metal ensures everything works right the first time. Once the connectors click into place and the ground is secure, you’re ready to hook up and tow.

Customer Satisfaction Score:
97% were satisfied with this product
3% of customers were not satisfied
Ratings & Reviews

12 G.
9/4/2018
Thanks for following up! The hitch and wiring harness have worked great! I just used them to complete a 3200 mile road trip pulling my dirtbike from MO to ID. Just this weekend I pulled a friends Yamaha Bolt to his new house 400 miles away. Couldn’t have asked for a better product or easier install!! If I ever need trailer supplies in the future, you’ve got my business.

Roger P.
8/21/2016
We are enjoying our hitch and wiring kit. I did hire the installation by our local shop to make sure it was done right. I especially like the longer cord on the wiring kit. The wire was too short on the last car I had. Its nice also being able to store it in the trunk to keep it from rusting out.Would recommend both of these items to anyone looking for a hitch for a 2014 Chevy Cruze.

Tim C.
10/15/2018
Excellent
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Victoria H.
3/20/2025
Thanks Mj, If we're the best, you're the bestest!