The question you ask is too involved for a proper answer. You may want to go to a car parts store, or book store, and get a repair manual for your car. They cost about $16.00 Or, go to a Public Library.
I believe the electric fuel pump inertia switch is in the front passenger footwell , under the front edge of the carpet , mounted on the toe board just to the right of the transmission hump on a 1994 Ford Explorer
On a 1994 Ford Explorer : You will find the engine oil filter on the passenger side of the 4.0 L V6 engine
under your motor on the passenger side of the vehicle
On a 1994 Ford Explorer : The modulator valve for the A4LD automatic transmission is on the passenger side of the transmission ( I believe it is behind a heat shield )
Bank 1 is the passenger side of the engine
On the passenger side of the engine , straight up and down
under dash on passenger side in ductwork'
It is in the passenger rear behind the jack on my 96
On a 1994 Ford Explorer : The modulator valve is on the outside of the A4LD automatic transmission , on the passenger side of the transmission , I believe it is behind a heat shield
it is on the lower side of the motor on the passenger side of your vehicle
Inside a black box, passenger side of the engine.
On a 1994 Ford Explorer : I BELIEVE it is in the front passenger footwell , under the front edge of the carpet , mounted on the toe board , just to the right of the transmission hump