This is going to show my newbieness but I currently don't have my fuel pump running through a relay. The po put in a new fuel pump and then routed the fuel pump directly into the front of the fuse box. When I bought it I had to pull the wire from the fuse panel to stop the fuel pump everytime I stopped. A couple months ago I put a switch and fuse in the line between the pump and the fuse box, so now I just flip a switch to turn the pump off. Besides draining my battery if I accidentally leave it on, is there any reason why I need a relay?