ballast resisters

Thanks, the pump is on the top of the shock mount, front passenger side, done by previous owner. No issues starting up, but pump stops pumping after 10_15 min. Just starting to trouble shoot it . I don't see a relay just the 2 wires out of the pump, 1 to ballast,neg to battery. Unless relay is built in pump.

The problem with mounting the pump high up in the front of the car is this: How does it get primed? Liquids do not naturally flow uphill. If the pump loses it's prime, it will be sucking a lot of air, and 90% of the time that will not work! Electric pumps should be lower than the fuel pickup (bottom of gas tank). Sometimes it will work okay if mounted otherwise, but chances are it won't always.