peterbilt light problems

Could ne the relay, or u may have a breaker in place of a fuse. Looks like a fuse but a lil bigger. Usually grey. It is either just getting old a weak or u have a short somewhere. U can get them at peteerbilt or probably other places. Try puting a fuse in its place and if it blows u have a short. Should b marked as clearance lites.

 

yup if u have a clicking in the fuse box then the relay is clicking. try moving a spare one to the spot and see if that stops the lights goin out. if it does u can leave the new one in the spot. just make sure they r the same amps. u should have some spares in the fuse box.

 

My driver just went in to Peterbilt in Springfield, MO with the same problem but it also affected his top trailer lights and some on the rear. It was one of the silver fuses and I think it was just loose a little. The service manager came out and bent the ends a little and that fixed the problem WITH NO CHARGE. I talked with the service manager on the phone and he said to tell the driver to stop in and he would take a look at it and he did and did not charge anything. You don`t have that happen very often at a dealership.

 

I had work done there, nice guys and they dont seam to want to bend you over backwards when it come to the bill.

 

Bean Farms, did you figure this out?? I'm having the same exact problem.

 

Check the wiring harness at the rear of the truck. A lot of the time it will wear through at the leveling valve area or on the rear cross member.