Tail Lights Dont Work Using Tekonsha Prodigy RF Wireless Trailer Brake Controller

Question:

After installation it worked as intended. After about 6 uses of the trailer it quit supplying power to the tail lights, everything else works as intended.

asked by: Herb

Helpful Expert Reply:

In order to determine if the Tekonsha Prodigy RF Wireless Trailer Brake Controller part # TK94FR is causing your tail lights not to function you would need to unplug the trailer end connector from the brake controller and then plug that directly into the vehicle. If all the tail light functions then you know the issue is with the brake controller. The only thing you can really do to troubleshoot the brake controller is check the pins inside each trailer connector. If the pins are fine then the brake controller would need to be replaced. It does have a lifetime warranty so there should not be an issue here.

However, if the tail lights still fail to function when the trailer connector is plugged directly into the vehicle (bypassing the brake controller) then you know the issue is in the wiring. I would first start off by checking the fuse on the tow vehicle. If the fuse checks out then try pulling the trailer with a different tow vehicle or tow vehicle with a different trailer. This will allow you to determine which side the issue is on and will then save you time when you perform the next step which is to trace the wires.

expert reply by: Conner L