To find the correct fuse:
1. Consult your owner's manual: This is the most reliable source. It will have a fuse diagram showing the location of all fuses and what each one protects.
2. Locate the fuse boxes: The 2000 Ford Ranger typically has at least two fuse boxes: one under the hood and one inside the passenger compartment (often under the dash).
3. Check both fuse boxes: Examine each fuse visually for a blown fuse (a broken filament). If you find one, replace it with a fuse of the same amperage rating.
Without the owner's manual, it's impossible to give you the correct fuse number. You risk damaging your vehicle's electrical system if you guess incorrectly. Obtain a manual online (many are available for free as PDFs) or from a Ford dealership.