Last month we discussed the basics of your car's 12-volt electrical system with the goal of understanding enough to trace problems to a particular electrical component. This month we're going to delve ...

Achieve max electric fuel pump output and safety using a relay plus an oil pressure safety switch. Achieving maximum output and safety with a custom-wired electric fuel pump requires a properly ...

Adding accessories to your truck or SUV used to be quite the ordeal. You had to find a place for switches, cut holes in precious interior panels, wire fuses and relays, and hope it all worked in the ...