It all started with mice chewing my wires in my headlamps. The fuse inside the interior blew and I figured out I must have a short somewhere. Fixed the wiring, put in a new fuse and presto, I have running lights. But not the problem starts: start the engine, turn on the lights, and the low beam lights turn off. Flick the swith for high beams and they work. Turn off the lights and the low beams come on! So no low beams when I drive with the lights on, only high beams. Turn off the lights and the running lights (low beams) come on. I havent a clue where to look now.