1995 Peterbilt 379 Blinker Problems

Should be a ground wire coming from the headlights and turn signal that is attached to the frame. Check and clean the ground wire.

 

I found a similar issue once where a wire had worn through and would blow fuses pretty regular. It was under the steering wheel at the 1st steering knuckle inside the plastic cowling at your knee's when driving.

 

Did you just install all the LED lights and now it doesn't work or did it work previously with all the LED lights?

 

Same here but, with the city horn wire.

 

Was that a wire shorted or like a circuit board short?
Not much is more aggravating than losing turn signals over and over.
I turn all the lights on every morning and the emergency flashers and do a walk around.

 

That is a new one - I know the CEL/SEL etc lights are the little blade bulbs in a twist lock - are the turn signal lights those too, and how was it shorted?