running lights

There is 1 fuse that doesn't have power on either end until the headlight switch is pulled to the park lamp position. Re check power to a going through that fuse. A rusty fuse clip, a fuse burned open behind its end cap where it cant be seen, are just examples from similar threads. There are also cases where the fuse blows as soon as the switch is pulled. That's a short that could be in a lot of different places and very difficult to find. In that case I'll start with any clues, like aftermarket juke box wiring.