To find it, you need to check these locations:
1. Under the Hood: There's a larger fuse box under the hood. The cover should have a diagram showing which fuse controls what. Look for a fuse labeled "Power Outlet," "Accessory," "Cigarette Lighter," or something similar.
2. Inside the Car (Usually near the driver's side): There's often a smaller fuse panel inside the car, typically located near the driver's side, often under the dash or in the console. Again, check the cover for a diagram.
Important Note: Because there's no single definitive location, referring to your owner's manual is crucial. It will have the most accurate and up-to-date fuse box diagram for your specific 2001 Mustang model.