Page 146 of 240

Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment Fuse
Panel Description
6 Ð Not Used
7 Ð Not Used
8 5A Radio, GEM
9 5A Switch Illumination (Headlamp,
Power Windows, Power Door
Locks), Power Window Relay,
Trailer Hook Up Lamps
(SuperCrewzer only)
10 Ð Not Used
11 30A Wiper Motor, Washer Pump Relay
12 10A Stoplamp Switch (Hydraulic
Vehicles Only)
13 20A Radio, Cluster, 7.3L Power Stroke
Powertrain Control Module
(PCM), Keep Alive Memory
14 10A Interior Lamps, Runningboard
lamps (SuperCrewzer only)
15 10A GEM, Interior Lamp Relay, Map
Lamps, Glove Box Lamps
(SuperCrewzer only), Power
Mirrors (SuperCrewzer only),
Warning Chime Module
(SuperCrewzer only)
16 15A Highbeams
17 Ð Not Used
18 5A Headlamp switch, GEM
19 15A Engine, Cluster, Cummins PC M,
CAT PCM, 7.3L Power Stroke
PCM (Idle Valid Switch Input)
20 15A Starter Relay, GEM
21 10A Daytime Running Lamps (DRL)
22 15A Exhaust Brake (SuperCrewzer
only), Heated Mirrors
(SuperCrewzer only), Rear Air
Suspension (SuperCrewzer only)
Roadside emergencies
146
Page 148 of 240

Power distribution box
The power distribution box is located in the engine compartment. The
power distribution box contains high-current fuses that protect your
vehicle's main electrical systems from overloads.
Always disconnect the battery before servicing high current fuses.
Always replace the cover to the Power Distribution Box before
reconnecting the battery or refilling fluid reservoirs.
If the battery has been disconnected and reconnected, refer to the
Batterysection of theMaintenance and carechapter.
The high-current fuses and relays are coded as follows.
Fuse/Relay
LocationFuse Amp
RatingPower 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
503
304
303
302301
502
501
207201
202
203
204122118114110106102
121117113109105101
120116112108104
119115111107103
24
209206
208
18161412108642
1715131197531
205
23
22
21
401
20
19
Roadside emergencies
148
Page 149 of 240
Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box
Description
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)
11 20A* Allison MD Trans, Allison
2000/2400 Trans
12 10A* Keyless Entry Module
(SuperCrewzer only)
13 10A* Park Brake Adjustment Module
(SuperCrewzer only)
14 Ð Not Used
15 7.5A* Body Builder Prep (Hydraulic
Vehicles Only)
16 10A* Allison 2000/2400 Trans
17 5A* Radio (SuperCrewzer only)
18 Ð Not Used
19 Ð Not Used
20 Ð Not Used
21 10A* GEM (Hydraulic Vehicles Only)
22 Ð Not Used
23 Ð Not Used
24 Ð Not Used
101 40A** ABS (Air Only)
102 20A** Body Builder Prep Run Feed
103 50A** Ignition Switch (JB fuses 8, 9, 11,
19, 20, 22, 23, 24, 25, 29, 30, 31)
Roadside emergencies
149
Page 150 of 240
Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box
Description
104 20A** Power Point
105 20A** Power Door Locks
106 30A** Headlamps
107 50A** Junction Box Battery Feed (fuses
1, 2, 3, 4, 12, 13, 14, 15)
108 40A** Cummins Fuel Heater
109 40A** Power Windows
110 30A** Power Seats (SuperCrewzer only)
111 30A** Body Builder Prep
112 40A** Blower Motor
113 30A** Heated Seats (SuperCrewzer
only)
114 30A** E-Brake (SuperCrewzer only)
115 40A** Ignition Switch (JB fuses 5, 8, 9,
11, 21)
116 30A** Body Builder Prep
117 20A** 7.3L Power Stroke PCM
118 30A** IDM (7.3L Power Stroke only)
119
12060A** Hydraulic ABS, Air Brake Trailer
Tow Fuse Block
121
12260A** Hydromax Motor, Air Brake
Trailer Tow Fuse Block
201 Ð Washer Pump Relay
202 Ð Wiper Speed Relay
203 Ð Wiper Run/Park Relay
204 Ð 7.3L Power Stroke Neutral Start
Relay, Stoplamp Relay (CAT and
Cummins only)
205 Ð Right Hand Stop/Turn Relay
206 Ð Left Hand Stop/Turn Relay
Roadside emergencies
150
Page 151 of 240
Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box
Description
207 Ð Shift Modulator Relay (CAT and
Power Stroke only), Cummins
UP-44 Relay, A/C High Pressure
Relay (SuperCrewzer only
208 Ð Backup Lamps Relay
209 Ð Stop Lamps Relay, Foglamps
Relay (SuperCrewzer only)
301 Ð Fuel Heater Relay (CAT and
Cummins only)/7.3L Power Stroke
PCM Relay
302 Ð Park Lamps Relay
303 Ð Blower Motor Relay
304 Ð Air ABS Relay
401 Ð Not Used
501 Ð Not Used
502 Ð Not Used
503 Diode 7.3L Power Stroke PCM Diode
* Mini Fuses ** Maxi Fuses
Roadside emergencies
151
Page 152 of 240
Relays
The relay box is located on the rear crossmember near the rear bumper.
Air Brake Trailer Tow Relays (if equipped)
The relays are coded as follows:
Fuse/Relay
LocationFuse Amp
RatingDescription
1 30A** Trailer Tow Run Feed
2 30A** Trailer Tow Park/Marker Lamps
3 30A** Trailer Tow Stop Lamps
4 30A** Trailer Tow Turn/Stop Lamps
5 Ð Not Used
R1 Ð Trailer Tow Run Relay
R2 Ð Trailer Tow Stop Lamp relay
R3 Ð Trailer Tow Park/Marker Lamp Relay
R4 Ð Trailer Tow Park/Marker Lamp Relay
R5 Ð Not Used
R6 Ð Not Used
R7 Ð Trailer Tow Left Turn/Stop Lamp Relay
R8 Ð Trailer Tow Right Turn/Stop Lamp Relay
** Maxi Fuse
TRLR
RUN
RELAYNOT
USED 30A
40A
30A
30A
NOT USED LH
TURNRH
TURN NOT
USED TRLR
MARKER LP
RELAY
TRLR
STOP LP
RELAYTRLR
TAIL LAMP
RELAY1 R1 R3
R5 R6
R2 R4
R7 R82
3
4
5
Roadside emergencies
152
Page 239 of 240

I
Ignition
removing the key ....................130
Infant seats (see Safety seats) ..97
Instrument panel
cleaning ...................................199
cluster ......................................199
lighting up panel and
interior .......................................21
location of components ............10
J
Jump-starting your vehicle ......157
K
Keys
key in ignition chime ...............16
removing from the ignition ....130
L
Lamps ..........................................74
bulb replacement
specifications chart ................195
cargo lamps ...............................21
daytime running light ...............21
fog lamps ...................................22
headlamps .................................21
headlamps, flash to pass ..........66
instrument panel, dimming .....21
interior lamps ...........................74
replacing bulbs ...............192±194
Lane change indicator (see
Turn signal) .................................65
Lights, warning and indicator ....10
anti-lock brakes (ABS) ....13, 108
brake ....................................10±11charging system ........................11
check coolant ......................14, 16
high beam .................................13
safety belt .................................15
service engine soon ..................15
turn signal indicator .................12
Lubricant specifications ...........201
M
Maintenance and Care ..............211
Manual transmission .................126
Mirrors .........................................77
heated ........................................74
O
Odometer .....................................18
P
Panic alarm feature, remote
entry system ................................79
Parking brake ............110, 113, 116
Power distribution box
(see Fuses) ...............................148
Power door locks ........................76
Power steering ..................124±125
fluid, checking and adding ....168
R
Radio ............................................28
Refill capacities for fluids ........200
Relays ................................143, 152
Remote entry system ...........78±79
illuminated entry ......................79
locking/unlocking doors ...........78
Index
239