Hello guys I have a 93 w250 I had intermittent problems with taillights – lights stopped working I replaced headlight switch now horn doesn't work – lights don't work and no taillights but my but my headlights work the plug looks good on both ends to the headlight switch can't see any melted wires wiggled all the wires and no lights came on I can make the tail lights turned on by pulling the switch out very slowly and they work shortly