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Brysonh801's avatar
Brysonh801
Explorer
Jan 31, 2018

Brake/turn signal lights don't work, running lights do

I have a 1983 terry 30' trailer. A while ago when I first bought it the brake lights and turn signals did work, now I'm facing the problem where they do not work, but my running lights do work, any op...
rbpru's avatar
rbpru
Explorer II
Jan 31, 2018
My PUP was notorious for corroded lamp ground circuits.

Do you get voltage on the seven pin at the TV side of the circuit? The voltage at the Tow Vehicle's plug should pulse with the turn signal.

A battery changer is handy for energizing a single pin and tracing the circuit.

Good luck

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