* Underhood Fuse Box: This is usually located in the engine compartment, often near the battery. Look closely around the battery area – it's typically a large, black plastic box.
* Interior Fuse Panel (Passenger Compartment): This is usually found inside the vehicle, often under the dashboard on the driver's side. It's usually a smaller box and sometimes has a cover. It might also be located in the glove box or on the side of the dashboard near the driver's knee.
To be absolutely certain, consult your 2001 Ford Ranger owner's manual. It will have diagrams showing the precise locations of both fuse boxes and will also specify which fuses control which circuits. This is the best way to avoid mistakes.