I just got my Mustang on the road. Apparently someone was too cheap to find out what the real issue with the car was. When you shut the car off, the fuel pump was still humming, so who ever had the car bypassed the fuel relay and wired it into the headlights. So now you have to turn on the lights before the car will start.

Can anyone give me suggestions on why the pump would have been running after the car was shut off? Would there be a problem with the pump itself, or just the relay needing to be replaced? I would hate to put it in the shop if it is something that I could do myself.