UNDER THE DRIVER SEAT
The 1994 Ford Mustang fuel pump relay switch is located below the fuel injector pump. The relay switch should be labeled as such.
The fuel pump relay on a 1999 Ford Mustang GT has a returnless fuel system which uses a Fuel Pump Driver Module. It is located underneath the luggage compartment trim panel.
it is under the drivers seat
In the gas tank
Fuel pump relay is stuck. Replace it.
under the driver side seat.
under drivers seat
A vehicle has many relays: Starter, Horn, Blower motor, wiper, Headlight, Fuel pump, etc.
under the drivers seat.
under the drivers seat in the back
under the pass front seat by k.a.
look underneath the passanger seat