A buddy of mine just got a 87 5.0 thunderbird. It runs and starts just fine. But it drains the batter fast. We got looking for a humming noise it was making and found out the fuel pump was not shutting off. I have read that is could be a stuck or bad relay. But we cant find where it is located. Can any one tell me where it is or if there is any thing else that could be causing this problem.