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Wiring a trailer usually means tapping into factory wires, but this harness skips all that. The Curt T-Connector plugs in behind the driver- and passenger-side tail lights to give you a 4-flat connector. No splicing or wire tracing required—just plug it in and you’re ready to tow.
Some vehicles can’t safely power trailer lights directly, which can cause dim or flickering signals. This harness includes a powered converter with a black wire that connects to the battery, giving the trailer lights their own stable power source. That means consistent, bright lighting on every trip.
The harness tucks neatly behind trim panels and uses factory access points for a low-profile finish. Wires stay protected and out of sight, giving your setup a clean look with no dangling cords or exposed splices.
The 4-flat connector provides running lights, brake lights, and turn signals—everything most small trailers need. It’s the standard hookup for campers, boats, and utility trailers, so you’re ready to roll as soon as it’s plugged in.
Customer Satisfaction Score:
80% were satisfied with this product
20% of customers were not satisfied
Ratings & Reviews

Mike L.
8/19/2026
I've ran into that before as well. The tip is to strip the wire back further, and double the wire back on itself. This increased the diameter of the wire which helps secure it when the butt connector is crimped.

Nick S.
9/15/2025
This is a custom fit harness for the 25' Sorentos, the only thing I can think of would be if your vehicle does not have LED tail lights this product will not work for it. It is only intended for vehicles with LED tail lights. I recommend double checking to see if you do or do not have LEDs.

Shannon
4/7/2026
Works as designed. No issues other than original install issues.

Mike L.
8/11/2026
The harness you purchased, # C63RV fits all 2026 Kia Sorento models EXCEPT the hybrid or SX model. If you have the hybrid or the SX model, use # C34FR73HY.

Mike L.
8/12/2026
Is your 2026 Kia Sorento a SX or a Hybrid model? If so, you'd need # C34FR73HY instead.

Lazer S.
9/23/2025
Unfortunately, this will only fit the non-hybrid versions of 2025 Kia Carnival, Corrie. There isn't a plug an play option for the hybrid models, but we do have the Curt Powered Tail Light Converter # C59236 that can be used. Would you like to have a return label sent out for the incorrect wiring harness? I can get that moving if so.

Mike L.
4/2/2026
I'm sorry that happened, Joseph! We've emailed you a pre-paid UPS label so you can return that harness free of charge.

Kate F.
2/2/2026
I am sorry to hear this Dan, we have many successful installations with this wiring. I would like to see what the issue is, can you please confirm your year, make, and model?
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Claire H.
6/10/2026
Thank goodness for plug-wiring harnesses, right? Such a time saver compared to having to splice into the wiring. Your install looks great! Thank you for taking the time to share with us!