Ford Mustang 2010 Owner's Manual page 217

The fuses are coded as follows:
Fuse/Relay Fuse Amp
Location
1
2
3
4
5
6
7
8
9
10
2010 05+ Mustang (197)
Owners Guide, 2nd Printing
USA (fus)
Roadside Emergencies
Protected Circuits
Rating
30A Driver rear window
(convertible only)
15A Brake On/Off (BOO) power
15A SYNC
30A Passenger rear window
(convertible only)
10A Brake transmission shift interlock
(BTSI)
20A Turn signals, Hazard flashers
10A Left low beam headlamp
10A Right low beam headlamp
15A Courtesy lamps
15A Switch illumination
217