Roadside emergencies – FORD 2008 F-550 v.2 User Manual
Page 276
Fuse/Relay
Location
Fuse Amp
Rating
Power Distribution Box Description
39
50A*
ECM power (Diesel engine)
40
30A*
Starter relay
41
20A*
Power point (Center console - Front)
42
30A*
Trailer park lamp relay
43
20A*
Power point (Center console - Rear)
44
30A*
Trailer battery charge relay
45
30A*
Driver power seat or Memory module
46
40A*
Run/Start relay
47
50A*
GPCM #2 (Diesel engine only)
48
30A*
ESOF relay hi-lo
49
30A*
Wiper motor
50
30A*
PCM relay coil, PCM relay (Gasoline
engines only)
51
—
Not used
52
—
Not used
53
Relay
PCM power bus (Fuses 68, 70, 72, 74, 76)
(Diesel engine only)
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
2008 F-250/350/450/550 (f23)
Owners Guide (post-2002-fmt)
USA (fus)
Roadside Emergencies
276