1998 DODGE RAM 1500 radio

CLEARANCE LAMP NO. 3 (HEAVY DUTY)-2WAY
CAV CIRCUIT FUNCTION
1 L70 20WT/GY FUSED PARK LAMP RELAY OUTPUT
2 Z946 20BK GROUND
CLEARANCE LAMP NO. 4 (HEAVY DUTY)-2WAY
CAV CIRCUIT FUNCTION
1 L70 20WT/GY FUSED PARK LAMP RELAY OUTPUT
2 Z946 20BK GROUND
CLEARANCE LAMP NO. 5 (HEAVY DUTY)-2WAY
CAV CIRCUIT FUNCTION
1 L70 20WT/GY FUSED PARK LAMP RELAY OUTPUT
2 Z946 20BK GROUND
CLOCKSPRING C1-6WAY
CAV CIRCUIT FUNCTION
1 Z909 20BK (DSAB ETC) GROUND
2 X20 20GY/WT (DSAB ETC) RADIO CONTROL MUX
3 V38 20VT/OR S/C SWITCH NO. 2 SIGNAL
4 V37 20VT S/C SWITCH NO. 1 SIGNAL
5 V937 20VT/BR S/C SWITCH RETURN
6 X3 20DG/VT HORN SWITCH SENSE
8W - 80 - 46 8W-80 CONNECTOR PIN-OUTSDR

CLOCKSPRING C2 - YELLOW 4 WAY
CAV CIRCUIT FUNCTION
1 R61 20LG/VT DRIVER SQUIB 2 LINE 1
2 R63 20LG/WT DRIVER SQUIB 2 LINE 2
3 R43 20LG/BR DRIVER SQUIB 1 LINE 1
4 R45 20LG/OR DRIVER SQUIB 1 LINE 2
CLOCKSPRING C3 - BLACK 4 WAY
CAV CIRCUIT FUNCTION
1 X3 20DG/VT HORN SWITCH SENSE
2 V937 20VT/BR S/C SWITCH RETURN
3 V37 20VT S/C SWITCH NO. 1 SIGNAL
4 V38 20VT/OR (DSAB ETC) S/C SWITCH NO. 2 SIGNAL
CLOCKSPRING C4-2WAY
CAV CIRCUIT FUNCTION
1 Z909 22BK GROUND
2 X20 22GY/WT RADIO CONTROL MUX
CLUTCH INTERLOCK BRAKE SWITCH-2WAY
CAV CIRCUIT FUNCTION
1 T41 20YL/DB TRS T41 SENSE
2 Z911 18BK GROUND
COIL ON PLUG NO. 1 (3.7L/4.7L) - BLACK 3 WAY
CAV CIRCUIT FUNCTION
1 K19 18DB/DG COIL CONTROL NO. 1
2 K342 16BR/WT ASD RELAY OUTPUT
3- -
DR8W-80 CONNECTOR PIN-OUTS 8W - 80 - 47

INSTRUMENT CLUSTER C2 - GRAY 16 WAY
CAV CIRCUIT FUNCTION
1 G194 20VT/LG WASH/BEAM SELECT SWITCH SIGNAL
2 G160 20VT/LG (SLT)8PASSENGER DOOR LOCK SWITCH MUX
3 G161 20VT/DG (SLT) DRIVER DOOR LOCK SWITCH MUX
4 E2 20OR/BR PANEL LAMPS DIMMER SIGNAL
5 L116 20WT/LG HEADLAMP SWITCH SIGNAL
6- -
7 G163 20VT/LB (SLT) DRIVER CYLINDER LOCK SWITCH MUX
8 L12 20WT/OR TURN LAMPS SWITCH SIGNAL
9- -
10 W52 20BR/YL INTERMITTENT WIPER SWITCH SIGNAL
11 T117 20DG/YL TRANS RANGE SENSOR ELECTRONIC CLUSTER 5
VOLT SUPPLY
12 X20 20GY/WT (SLT PREMIUM RADIO) RADIO CONTROL MUX
13 - -
14 - -
15 - -
16 - -
INSTRUMENT CLUSTER C3 - GRAY 26 WAY
CAV CIRCUIT FUNCTION
1 G75 20VT DRIVER DOOR AJAR SWITCH SENSE
2 G77 20VT/GY LEFT REAR DOOR AJAR SWITCH SENSE
3 G76 20VT/YL RIGHT REAR DOOR AJAR SWITCH SENSE
4 G74 20VT/WT PASSENGER DOOR AJAR SWITCH SENSE
5- -
6- -
7 K77 18BR/WT TRANSFER CASE POSITION SENSOR INPUT
8 L900 20WT/YL WIPER/TURN/BEAM SELECT SWITCH RETURN
9 L115 20WT/YL HEADLAMP SWITCH RETURN
10 T917 20YL/TN TRANS RANGE SENSOR ELECTRONIC CLUSTER MUX
11 - -
12 - -
13 Z18 20BK/LB GROUND
14 X3 20DG/VT HORN SWITCH SENSE
15 L50 18WT/TN BRAKE LAMP SWITCH OUTPUT
16 G15 20VT/TN KEY IN IGNITION SWITCH SENSE
17 - -
18 - -
19 D25 20WT/VT PCI BUS
20 G10 20VT/LG SEAT BELT SWITCH SENSE
21 - -
22 B25 20DG/WT PARK BRAKE SWITCH SENSE
23 F983 20PK/YL FUSED IGNITION SWITCH OUTPUT (RUN-ACC)
24 F1 16PK/WT FUSED IGNITION SWITCH OUTPUT (OFF-RUN-START)
25 F21 20PK/DG FUSED IGNITION SWITCH OUTPUT (RUN-START)
26 A114 18GY/RD FUSED B(+)
8W - 80 - 72 8W-80 CONNECTOR PIN-OUTSDR

RADIO C1 (EXCEPT INFINITY) - GRAY 22 WAY
CAV CIRCUIT FUNCTION
1 A114 18GY/RD FUSED B(+)
2 F983 20PK/YL FUSED IGNITION SWITCH OUTPUT (RUN-ACC)
3 E14 20OR/TN PANEL LAMPS DRIVER
4- -
5- -
6- -
7 X154 18GY/YL RIGHT FRONT DOOR SPEAKER (+)
8 X156 18GY/LB RIGHT FRONT DOOR SPEAKER (-)
9 X155 18DG/LB LEFT FRONT DOOR SPEAKER (-)
10 X153 18DG/YL LEFT FRONT DOOR SPEAKER (+)
11 Z514 18BK/LG GROUND
12 A114 18GY/RD FUSED B(+)
13 - -
14 D25 20WT/VT PCI BUS
15 - -
16 - -
17 - -
18 X205 18GY/LG LEFT REAR SPEAKER (+)
19 X295 18GY/DG LEFT REAR SPEAKER (-)
20 X296 18DG/GY RIGHT REAR SPEAKER (-)
21 X206 18DG/LG RIGHT REAR SPEAKER (+)
22 Z515 18BK GROUND
RADIO C1 (INFINITY) - GRAY 22 WAY
CAV CIRCUIT FUNCTION
1 A114 18GY/RD FUSED B(+)
2 F983 20PK/YL FUSED IGNITION SWITCH OUTPUT (RUN-ACC)
3 E14 20OR/TN PANEL LAMPS DRIVER
4- -
5- -
6- -
7 X56 20GY/BR RIGHT FRONT SPEAKER (+)
8 X54 20GY RIGHT FRONT SPEAKER (-)
9 X55 20DG/BR LEFT FRONT SPEAKER (-)
10 X53 20DG LEFT FRONT SPEAKER (+)
11 Z514 18BK/LG GROUND
12 A114 18GY/RD FUSED B(+)
13 X11 20DG RADIO 12 VOLT OUTPUT
14 D25 20WT/VT PCI BUS
15 - -
16 - -
17 - -
18 X51 20DG/DB LEFT REAR SPEAKER (+)
19 X57 20DG/OR LEFT REAR SPEAKER (-)
20 X58 20GY/OR RIGHT REAR SPEAKER (-)
21 X52 20GY/DB RIGHT REAR SPEAKER (+)
22 Z515 18BK GROUND
8W - 80 - 92 8W-80 CONNECTOR PIN-OUTSDR

RADIO C2 - 10 WAY
CAV CIRCUIT FUNCTION
1 X704 18DG/YL RIGHT AUDIO OUTPUT
2 X795 18DG HANDS FREE AUDIO OUTPUT COMMON
3- -
4- -
5- -
6 X703 18DG/OR LEFT AUDIO OUTPUT
7- -
8- -
9- -
10 - -
RECIRCULATION DOOR ACTUATOR-2WAY
CAV CIRCUIT FUNCTION
1 C34 20DB/LB COMMON DOOR DRIVER
2 C32 20DB/TN RECIRCULATION DOOR DRIVER
REMOTE RADIO SWITCH-LEFT - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 X20 22GY/WT RADIO CONTROL MUX
2 Z909 22BK GROUND
REMOTE RADIO SWITCH-RIGHT - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 X20 22GY/WT RADIO CONTROL MUX
2 Z909 22BK GROUND
DR8W-80 CONNECTOR PIN-OUTS 8W - 80 - 93

CONNECTOR NAME/NUMBER COLOR LOCATION FIG.
PTO Switch Near G107 N/S
Radio C1 (Base) GY Rear of Radio 35, 36
Radio C1 (Premium) BK Rear of Radio 36
Radio C2 (Premium) BK Rear of Radio 36
Radio Antenna - At Antenna Base 37
Radio Antenna Cable - Right Kick Panel 36, 37
Recirculation Door Actuator BK Right Side of HVAC N/S
Red Brake Warning Indicator
SwitchBK Near Master Cylinder 22, 25, 29
Remote Radio Switch-Left BK At Steering Wheel N/S
Remote Radio Switch-Right BK At Steering Wheel N/S
Seat Belt Pretensioner-Left YL Left B-Pillar 44, 46
Seat Belt Pretensioner-Right YL Right B-Pillar 45, 47
Seat Belt Switch-Driver DK GY Left B-Pillar N/S
Seat Belt Tension Reducer
(Standard Cab)YL Left B-Pillar 44
Seat Heater Interface Module GN Under Driver Seat N/S
Sentry Key Immobilizer Module BK On Steering Column 30
Side Marker - Left Front (Dual
Wheels)BK Front of Left Rear Fender 52
Side Marker - Left Rear (Dual
Wheels)BK Rear of Left Rear Fender 52
Side Marker - Right Front (Dual
Wheels)BK Front of Right Rear Fender 52
Side Marker - Right Rear (Dual
Wheels)BK Rear of Right Rear Fender 52
Speaker-Center Instrument Panel WT Center of Instrument Panel 35, 36
Speaker-Left Front Door WT In Left Front Door 41
Speaker-Left Instrument Panel BK Left Side of Instrument Panel 35, 38
Speaker-Left Rear (Standard Cab) WT In Lower Left B-Pillar 44
Speaker-Left Rear Door (Quad
Cab)WT In Left Rear Door 43
Speaker-Right Front Door WT In Right Front Door 42
Speaker-Right Instrument Panel BK Right Side of Instrument Panel 35, 39
Speaker-Right Rear (Standard
Cab)BK In Lower Right B-Pillar 45
Speaker-Right Rear Door (Quad
Cab)BK In Right Rear Door 43
Speed Control Servo BK Left Front Side of Engine
Compartment23, 25
Speed Control Switch - Left
(Except ETC)GN Steering Wheel N/S
Speed Control Switch - Right
(Except ETC)GN Steering Wheel N/S
Speed Control Switch-Left (ETC) WT At Steering Wheel N/S
DR8W-91 CONNECTOR/GROUND/SPLICE LOCATION 8W - 91 - 7
CONNECTOR/GROUND/SPLICE LOCATION (Continued)

Fig. 37 RADIO ANTENNA
DR8W-91 CONNECTOR/GROUND/SPLICE LOCATION 8W - 91 - 47
CONNECTOR/GROUND/SPLICE LOCATION (Continued)

requires the use of a DRB IIItscan tool and the
proper Body Diagnostic Procedures manual.
Before any testing of the front control module is
attempted, the battery should be fully charged and
all wire harness and ground connections inspected
around the affected areas on the vehicle.
REMOVAL
(1) Disconnect the positive and negative battery
cables from the battery.
(2) Partially remove the integrated power module
from the engine compartment (Refer to 8 - ELECTRI-
CAL/POWER DISTRIBUTION/INTEGRATED
POWER MODULE - REMOVAL).
(3) Remove the front control module retaining
screws.
(4) Using both hands, pull the front control module
straightfrom the integrated power module assembly
to disconnect the 49-way electrical connector and
remove the front control module from the vehicle.
INSTALLATION
(1) Install the front control module on the inte-
grated power module assembly by pushing the
49-way electrical connector straight in.
(2) Install the front control module retaining
screws. Torque the screws to 7 in. lbs.
(3) Install the integrated power module (Refer to 8
- ELECTRICAL/POWER DISTRIBUTION/INTE-
GRATED POWER MODULE - INSTALLATION).
(4) Connect the positive and negative battery
cables.
IOD FUSE
DESCRIPTION
All vehicles are equipped with an Ignition-Off
Draw (IOD) fuse that is disconnected within the Inte-
grated Power Module when the vehicle is shipped
from the factory. Dealer personnel are to reconnect
the IOD fuse in the Integrated Power Module as part
of the preparation procedures performed just prior to
new vehicle delivery.
A laser printed fuse layout map is integral to the
Integrated Power Module cover to ensure proper fuse
identification. The IOD fuse is a 20 ampere mini
blade-type fuse, located in fuse cavity # 51 (Fig. 6).
The fuse is secured within a black molded plastic
fuse holder and puller unit that serves both as a tool
for disconnecting and reconnecting the fuse in its
Integrated Power Module cavity, and as a fuse holder
that conveniently stores the fuse in the same Inte-
grated Power Module cavity after it has been discon-
nected.
CIRCUITS INCLUDED WITH IOD FUSE
²Cluster (CCN)
²Diagnostic Connector
²Map Lamps
²Glove Box Lamp
²Courtesy Lamps
²Radio
²Underhood Lamp
OPERATION
The term ignition-off draw identifies a normal con-
dition where power is being drained from the battery
with the ignition switch in the Off position. The IOD
fuse feeds the memory and sleep mode functions for
some of the electronic modules in the vehicle as well
as various other accessories that require battery cur-
rent when the ignition switch is in the Off position.
The only reason the IOD fuse is disconnected is to
reduce the normal IOD of the vehicle electrical sys-
tem during new vehicle transportation and pre-deliv-
ery storage to reduce battery depletion, while still
allowing vehicle operation so that the vehicle can be
loaded, unloaded and moved as needed by both vehi-
cle transportation company and dealer personnel.
The IOD fuse is disconnected from Integrated
Power Module fuse cavity # 51 when the vehicle is
shipped from the assembly plant. Dealer personnel
must reconnect the IOD fuse when the vehicle is
being prepared for delivery in order to restore full
electrical system operation. Once the vehicle is pre-
pared for delivery, the IOD function of this fuse
Fig. 6 IOD FUSE LOCATION
1 - IOD FUSE
8W - 97 - 6 8W-97 POWER DISTRIBUTIONDR
FRONT CONTROL MODULE (Continued)