Looking for fuel shut off switch on a 1990 f150 pick up cant find it does anyone know where is?

A 1990 Ford F-150 does not have a readily accessible fuel shut-off switch like some other vehicles. There's no centrally located switch you'll find under the dash or in the engine bay. The fuel system relies on the ignition switch to control fuel flow. Turning the ignition key to the "off" position shuts off the fuel pump.

If you need to quickly cut off fuel flow in an emergency (like a fire), you would need to disconnect the fuel pump's power wire at the pump or the fuel pump relay. This requires knowledge of the vehicle's electrical system and is not a simple task. Always prioritize your safety and evacuate the area if a fire is present. Don't attempt this under dangerous conditions.