Forum Discussion

Cecilt's avatar
Cecilt
Explorer
Jul 08, 2016

Turn and Brake light on TT only work on one side

I get power to the rear tail lights on the TT and the upper lights and when I turn the headlights on all rear lights work. Turn and brake signal work on the passenger side but neither work on the dri...
agesilaus's avatar
agesilaus
Explorer III
Jul 08, 2016
Time for the DVM Digital Volt Meter. Check at the truck connection end and at the brake light end. While someone has their foot on the brake. You can find the wiring diagram here:

Pinout

This will localize the problem to the truck or the trailer.

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