BreeB

I have a 1987 F150 and only three of the five running lights on the roof are working. I tried replacing one of the blubs, and the light still didn't work. No immediate corrosion around the wires attached to the blub socket itself.

I recently had a problem with my headlights not turning on, but I fixed this by simply poping the fuse in and out. I think the fuse for my headlights is the same one as for my exterior lights… or at least that is what the diagram on the cover appears to say.

Any advice would be much appreciated! I have found this site very helpful when it comes to all of the issues I have with my truck.

qujo88

If your under dash fuse is good I would trace the wires and see if there is an in line fuse. Depending on if they were stock or not, they might be running an additional fuse as prevention.

Fordzillify

Try pulling the bulbs and looking at the contacts inside the socket

Klinux13

Use a multimeter and see if you're getting power before you tear anything apart.