* Under the hood: This box is usually located on the driver's side fender, near the battery. This is the most common location for the main fuse box.
* Inside the cab: For extended cab models, there's often a smaller fuse panel inside the cab, usually located on the driver's side, under the dash. This often contains fuses for interior accessories.
To be absolutely certain, check your owner's manual. It will have a diagram showing the location and a key identifying which fuse controls what. If you don't have the manual, you can often find a PDF version online through a Ford parts website or a search engine.