Where is fuse for 2002 mustang lighter?

The fuse for the cigarette lighter (power outlet) in a 2002 Ford Mustang is located in the under-hood fuse box. It's not typically labeled "cigarette lighter" directly, but will likely be labeled as "Power Point", "Accessory Power" or something similar. Consult your owner's manual for the specific fuse location and amperage rating. The owner's manual will have a fuse box diagram showing what each fuse controls.