Trailer Wiring Harness For A 2025 Kia Carnival LX Without LED Taillights

Updated 06/03/2026 | Published 05/29/2026

Question:

I have a 2025 kia carnival lx , Im wanting a wiring harness for my trailer lights . My kia has bulbs ,not less. Is there one available for it ,and if so what is the part number for it . Thank you

asked by: Darrell S

Expert Reply:

Hi Darrell!

To get your 2025 Kia Carnival LX without LED taillights wired up with a 4-Flat, you are going to want the following part:

Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C32MJ

This is a plug and play wiring harness and attaches between the taillight wires (see included image), though you will need to run one wire to the battery for needed power. It does make it a little more difficult, but not overly so. Just be patient and you will get it done.

What are you going to be towing with your Carnival? Or are you wanting to add lights to a bike rack or something?

expert reply by: Lazer S