Over the weekend I changed the light and wiper switch in my 83 f250. All went fine and drove several times. I went back to start it up and didn't have any power to anything accessories, starter, lights...Nothing. Thought the battery must be dead but battery is completely charged. Traced out wiring and didn't see anything obvious. Is there a master fuse or something that could have blown? Or am I missing the obvious? Thanks - Mthrow.

 

There is no master fuse that I know of, but there are fusible links in the supply to those systems. It is rare that both would be blown at the same time. Good idea to check the cables for internal corrosion. How did you determine the battery was good?

 

Checked battery with tester, registers full charge. Nee cables and all fuses are good. Any other ideas?

 

If the battery is good and the battery connections and cables are verified to be good , check the ground cable where it connects to the engine. If all that is good , you have to at least have headlights. If not there is a problem with power coming from the battery to the rest of the vehicle. Do you have power to the fuse panel?

 

Excellent that led me to the short. Thanks Hanky.