2015 T660. Reverse lights

[Rawze]

I have seen a couple trucks show up here and brake lights or rev lights were partially lit.

On some trucks, the +12v is constant on the lights, and the ground wire is the one that is switched on and off to make them light up. - If this is the case, then it can be moisture getting into the lighting harness, wiring starting to rub through somewhere, ... I.E.> something shorting out to ground somewhere.

I have even seen bad bulbs cause this issue.

--Start by unplugging bulbs in the back, one at a time. Last guy came over, it was a brake light bulb socket shorting out to the frame causing it.

Just some thoughts anyways.