Ford Mustang Owner's Manual page 239

WARNING: Always disconnect the battery before servicing high
current fuses.
WARNING: To reduce risk of electrical shock, always replace
the cover to the Power Distribution Box before reconnecting the
battery or refilling fluid reservoirs.
If the battery has been disconnected and reconnected, refer to the
Battery section of the Maintenance and Specifications chapter.
The high-current fuses are coded as follows.
Fuse/Relay Fuse Amp
Location
1
2
3
4
5
6
7
8
2012 05+ Mustang (197)
Owners Guide, 3rd Printing
USA (fus)
Roadside Emergencies
Protected Circuits
Rating
80A* Passenger compartment fuse panel
— Not used
— Not used
30A* Blower motor relay
20A* Powerpoint (body)
40A* Rear defroster
40A* Cooling fan relay
40A* Anti-lock brake system (ABS)
pump
239