Where is the fuel pump reset switch located on a 1991 Lincoln Town car 4.6 Liter?

There is no fuel pump reset switch on a 1991 Lincoln Town Car (or virtually any other car). Fuel pumps are controlled by the car's computer and are not manually resettable with a switch.

If you're having fuel pump issues, the problem is likely a faulty pump, a relay, a fuse, wiring problem, or a problem with the computer itself. You'll need to diagnose the specific problem using a multimeter or have it checked by a mechanic.