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Adding trailer lights doesn’t have to mean cutting or guessing at wires. The Curt T-Connector Vehicle Wiring Harness for Factory Tow Package plugs straight into the existing vehicle wiring in the rear cargo area. Everything connects cleanly behind trim panels, giving you a 4-pole flat trailer connector without any wire splicing or extra tools.
A short in a trailer’s wiring can do real damage if power feeds back into the vehicle circuits. This harness includes a powered converter that isolates and protects the vehicle electronics from shorts or backfeeds on the trailer. It keeps your system safe while supplying the proper signal power for running, brake, and turn lights.
The kit comes complete with a red 10-amp mini-blade fuse for the inline holder and a pink 30-amp box fuse for the engine-bay fuse box. These fuses activate and protect the tow package circuits, so once installed, everything is powered up and ready for towing.
The 4-flat connector gives you the basic lighting functions—running, brake, and turn signals—for small to mid-size trailers. It’s the standard trailer connection for everything from small campers to utility trailers, making it easy to hook up and tow safely every time.
Customer Satisfaction Score:
97% were satisfied with this product
3% of customers were not satisfied
Ratings & Reviews
Papajo
5/17/2025
The wiring harness is holding up extremely well. No issues what so ever. It is a quality piece.
Scott
9/25/2025
One year later and still working without a problem. It was so easy to install this kit following the video. It is one of the very few DIY projects that took less time than I expected.
Paul W.
10/11/2020
Harness has worked out fine. No issues.
Jenny N.
5/31/2024
Oh dear! We will be in contact with you about the missing harness. Keep an eye out for our email.
Greg
6/2/2025
The wiring harness never showed up.
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Heather A.
5/30/2025
Hey, thanks Nathaniel! Just doing our part to keep man cards from getting revoked. Paper instructions? nah. This is 2025! Now that you have the hitch installed, what are your plans for it?