Hey folks, I am trying to put in a new pump for the sink in our 76 camper. The new pump is a 12 volt, requiring a 3 amp fuse. Everytime I hook up the live wire (+), the fuse blows. Any suggestions? I have double checked, and I cannot see were there would be a short. The wire goes from the hotwire to the fuse, to the switch, to the pump to the ground. (BTW, there is a ground on the switch that I hooked up, could that be it?) Thanks all. I would have looked under archives, but it does not seem to be working.