Roadside emergencies – FORD 2008 F-550 v.3 User Manual
Page 302
Fuse/Relay
Location
Fuse Amp
Rating
Power Distribution Box
Description
54
Relay
Starter solenoid
55
Relay
Trailer tow park lamps
56
Relay
Trailer tow battery charge
57
Relay
Power Distribution Box (PDB)
bus (fuses 67, 69, 71, 73, 75, 77)
SJB Run /Start bus (Fuses 29–37,
46)
58
Relay
ESOF hi-lo
59
Relay
PCM power bus (Fuses 68, 70,
72, 74, 76) (Gasoline engines
only)
60
Diode
Starter relay (Gasoline engines
only)
61
Diode
A/C clutch
62
Diode
Fuel pump
63
15A**
Trailer tow back-up lamps
64
5A**
Mirror marker lamps
65
—
Not used
66
—
Not used
67
—
Not used
68
—
Not used
69
—
Not used
70
10A**
Gasoline engines: A/C clutch
relay coil, Refrigerant
Containment Switch, Heated PCV
Diesel engine: A/C clutch relay
coil, Clutch switch, Fuel pump
cooler, A/C cycle pressure switch
71
5A**
Fuel pump relay diode,
PCM/ECM Run/Start power
72
15A**
Gasoline engines: Ignition coils
Diesel engine: Engine TCM
2008 F-250/350/450/550 (f23)
Owners Guide (post-2002-fmt)
USA (fus)
Roadside Emergencies
302