Ford Repair Questions? Ask a Mechanic for Answers ASAP
I have attached the workshop manual wire diagram for that bulb. Being that the park brake works, we know the ground wire to the bulb is good as both elements share the same ground source. This leaves the wiring from the fuse box, the connector ends, or a problem in the fuse box itself. We will need a 12 volt test light to test the circuit, do you have access to a test light?