The high-current fuses and relays are coded as follows.
Fuse/Relay
Location
Fuse Amp
Rating
Power Distribution Box Description
1
15A*
Park Lamps, Roof Lamps
2
25A*
Cummins Powertrain Control Module
(PCM)
15A*
Foglamps (SuperCrewzer only)
3
10A*
Generator
4
15A*
Washer Pump
5
15A*
Air Intake Heater Relay (CAT), Cummins
PCM
6
20A*
CAT PCM, Cummins PCM
7
15A*
Stop Lamps
8
25A*
C AT Fuel Heater
9
30A*
Trailer Hook Up lamps (SuperCrewzer
only)
10
15A*
Shift Modulator (Allison AT trans only)
(Except for f650 SuperCrewzer and
Caterpillar/Cummins)
11
20A*
Allison MD Trans, Allison 2000/2400 Trans
503
304
303
302
301
502
501
207
201
202
203
204
122
118
114
110
106
102
121
117
113
109
105
101
120
116
112
108
104
119
115
111
107
103
24
209
206
208
18
16
14
12
10
8
6
4
2
17
15
13
11
9
7
5
3
1
205
23
22
21
401
20
19
Roadside Emergencies
156