FORD 2008 F-550 v.2 - Manual (Page 271)

The fuses are coded as follows.
Fuse/Relay
Location
Fuse Amp
Rating
Passenger Compartment Fuse Panel
Description
1 30A Not used (spare)
2 15A Not used (spare)
3 15A Family Entertainment System (FES)
4 30A Not used (spare)
5 10A Keypad illumination, Brake-Shift Interlock
(BSI)
6 20A Turn signals
7 10A Left headlamp (Low beam)
8 10A Right headlamp (Low beam)
9 15A Interior lighting
10 15A Cargo lamp
11 10A Not used
2008 F-250/350/450/550 (f23)
Owners Guide (post-2002-fmt)
USA (fus)
Roadside Emergencies
271