4-Way Wiring for 2025 Hyundai Tucson

Updated 09/29/2025 | Published 09/07/2025

Question:

I can’t find a 4 pin trailer connector wiring harness for a 2025 Hyundai Tucson. Do you have this item?

asked by: Steve T

Expert Reply:

Hi Steve; there were some changes to the 2025 Tucson so the old custom wiring didn't carry over. Since none of the aftermarket manufacturers have a new wiring harness yet the only option is a universal wiring harness. You can use the Curt # C59236 which splices in or the ZCI Circuit Protected Vehicle Wiring Harness # 119250KIT which clamps onto your vehicle wiring so you don't have to splice.

If you have the factory wiring plug you can also pick up the OEM wiring harness from Hyundai. However, I'm guessing that is pretty pricey. We install the splice-in wiring all the time without any issues so that is the route I would go if I were you.

Will you be towing a trailer or do you have an accessory with lights?

expert reply by: Robin H

Curt 4-Way
(click to enlarge)

Robin H.

9/29/2025

Hey Steve, did you decide to go with the universal wiring harness for your Tucson? I'm curious if it worked well for your needs, as it could help others trying to find a solution for their trailer wiring.

Steve T.

9/29/2025

@RobinH: I did not use the universal wiring harness because I was uncomfortable running a power wore from the engine compartment all the way to the back of the vehicle. I’m either going to have to pay Hyundai over $300 to install their harness or wait for Curt to come out with a custom harness (with installation instructions).