I have a 99 f-350,and my door locs seem to be workin funny somtimes they work and somtimes they dont. Electrical problems suck,anyway when i hit the lock button i here a relay in my dash clicking. Now it only seems to click when the locks dont work. if i push the button and the locks decide to work i dont hear the relay. could the relay for the locks be bad? any help would be great thanks oh ya it dose the same thing with the keyless entry.

 

Its possible the relay is bad...If the part is cheap, then I would try it...

If its not the part, then you are going to have to dig deep into the problem..