See the green-doohickie under the driver's seat on the floor, thats the relay for my 1989 Mustang.
There is also the "rear end collision switch" that is located near the back hatch latching mechanism. It looks about 1"x1" and has a plunger to reset it.
p.s. I have a stock fuel pump with like 25K miles on it. email me
drudis@ford.com