* Under the hood: This fuse block usually contains fuses for higher-amperage circuits like the starter motor and ignition system. Look near the battery, often on the driver's side fender well.
* Inside the passenger compartment: This fuse block, often called the "power distribution box," usually houses fuses for lower-amperage circuits powering things like lights, wipers, and power windows. It's typically located under the dashboard, on the driver's side. You might need to remove a small panel or cover to access it.
To be certain: Check your 1991 Ford Explorer's owner's manual. It will have a diagram showing the locations and purposes of all the fuses and relays.
