Troubleshooting Trailer Wiring that the Turn Signals Activate with Blinkers

Published 09/30/2014

Products Featured in This Question

Curt 4-Way Flat Trailer Connector with Circuit Protected Powered Tail Light Converter

(62)

$41.10

2-to-3 Tail Light Converter for Towed Vehicles w/ Incandescent Tail Lights

(173)

$38.04

Question:

Expert responded to my first question stating I need a trailer converter to change the trailer wiring on the trailer. Vehicle to vehicle taillight converter. Is this in addition to the installed 56146 kit? Also the traier has led tail and turn signal lights. Product data on the vehicle to vehicle converter says will not work with led lights? I need help and guidance on what to do and how to do it. Thank you,

asked by: LeRoy C

Expert Reply:

The issue you are experiencing is due to the fact that your trailer has separate trailer wiring circuits, meaning the turn signals and the brake lights are on separate bulbs and the trailer wiring harness # C56496 you installed is designed to operate combined trailer taillights, meaning the turn signals and brake lights are on the same bulb.

What you are going to need to do is install the taillight signal converter part # 118158 on the wiring of your trailer. Once installed the red wire of the converter will run to your brake lights on the output side and the yellow wire will run to the left turn signals and the green will run to the right.

Check out the picture I attached to see how it will wire up.

expert reply by: Jameson C

click to enlarge

Leroy C.

9/30/2014

Jameson C.

9/30/2014

Yes, you will want to keep the # C56496 installed on your vehicle. The # 118158 is not designed to be used with VEHICLES with LED taillights. Since your trailer has LEDs and not your vehicle you would be just fine. If you follow the diagram I attached you will be good to go. The adapter # 118158 will install on the trailer side of the wiring. Basically you will cut all of the trailer wires that run to the 4-way on your trailer except the running lights circuit and then the rest of the wires will run to the # 118158 like in the diagram I attached. And then from the converter the wires will run to your taillights.