To find the correct fuse:
1. Consult your owner's manual: This is the best source. It will have a fuse box diagram showing which fuse controls what.
2. Locate your fuse boxes: 2002 F-250s typically have multiple fuse boxes: one under the hood and one inside the cab (usually under the dash).
3. Check both fuse boxes: Carefully examine the diagrams in each fuse box and look for a fuse labeled "Power Outlet," "Cigarette Lighter," "Accessory Power," or something similar. The amperage rating might also be listed (typically 10-20 amps).
4. Use a test light or multimeter: If you can't find a clearly labeled fuse, you can use a test light or multimeter to check the power at each fuse while the lighter is turned on. Be careful when working with electricity.
If you cannot locate the fuse using the owner's manual or through testing, take your truck to a mechanic or auto parts store for assistance. They will have the proper diagrams and tools to help you diagnose the problem.
