I have a ‘74 Duster with a 318. When I bought it, it had a new gas tank sending unit. Before I started messing with it, the gauge would stay showing empty no matter how much fuel I put in the tank. I cleaned and reinstalled the ground strap, and it didn’t make a difference. I ran a hot wire to the tank and it pegged the gauge past full. That might have been a bad idea, as the gauge is showing below empty now.
Do I burn up the gauge by doing this?