1998 DODGE RAM 1500 glove box

GENERATOR - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 K20 18BR/GY GEN FIELD CONTROL
2 Z816 18BK (DIESEL) GROUND
2 Z20 18BR/BK (NGC) GROUND
GLOVE BOX LAMP AND SWITCH - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 Z328 20BK/TN GROUND
2 M228 18YL/LB COURTESY LAMP DRIVER
HANDS FREE MODULE (TELEMATICS) - 22 WAY
CAV CIRCUIT FUNCTION
1 A114 18GY/RD FUSED B(+)
2 F983 20PK/YL FUSED IGNITION SWITCH OUTPUT (RUN-ACC)
3- -
4- -
5 X722 18LB/DG MICROPHONE 2 IN (+)
6- -
7- -
8 X703 18DG/OR LEFT AUDIO OUTPUT
9 X704 18DG/YL RIGHT AUDIO OUTPUT
10 X795 18DG HANDS FREE AUDIO OUTPUT COMMON
11 - -
12 - -
13 - -
14 D25 20WT/VT PCI BUS
15 X730 18GY/YL VOICE RECOGNITION/PHONE SWITCH SIGNAL
16 X712 18DG/LB MICROPHONE 1 IN (+)
17 X792 18LB/DG MICROPHONE IN (-)
18 X735 22NA HANDSFREE MICROPHONE SHIELD
19 - -
20 X793 18DG/YL HANDSFREE MICROPHONE HSD FEED
21 X835 18OR/GY SENSOR GROUND
22 Z970 18BK GROUND
DR8W-80 CONNECTOR PIN-OUTS 8W - 80 - 67

CONNECTOR NAME/NUMBER COLOR LOCATION FIG.
Glove Box Lamp and Switch BK At Glove Box 35, 39
Governor Pressure Sensor BK Left Rear of Transmission N/S
Hands Free Module Right Instrument Panel 39
Headlamp Switch BK Left Side of Instrument Panel 32, 35, 38
Headlamp-Left BL At Headlamp 23, 28, 29
Headlamp-Right BL At Headlamp 1, 21, 26
Heated Seat Cushion - Driver BL Under Driver Seat N/S
Heated Seat Cushion - Passenger BL Under Passenger Seat N/S
Heated Seat Switch-Driver RD Center of Instrument Panel 33, 35, 36
Heated Seat Switch-Passenger BL Center of Instrument Panel 33, 35, 36
Horn Switch WT In Steering Wheel N/S
Horn-High Note BK Left Front Fender 23, 28, 29
Horn-Low Note BK Left Front Fender 23, 29
Idle Air Control Motor BK On Throttle Body 6
Ignition Coil GY Left Rear of Engine N/S
Ignition Switch BK Steering Column 31
Inlet Air Temperature/Pressure
SensorBK Right Side Engine 10
Input Speed Sensor BK At Transmission 15, 16
Instrument Cluster C1 GY Rear of Instrument Cluster 35
Instrument Cluster C2 GY Rear of Instrument Cluster 35
Instrument Cluster C3 WT Rear of Instrument Cluster 35
Intake Air Heater Relay Right Engine Compartment 2
Intake Air Temperature/Manifold
Absolute Pressure Sensor (Diesel)BK Left rear Engine N/S
Intake Air Temperature Sensor BK On Intake Manifold 5
Integrated Power Module C1 BK Left Front Fender 26, 28
Integrated Power Module C2 WT Left Front Fender 26, 28
Integrated Power Module C3 GR Left Front Fender 26, 28
Integrated Power Module C4 WT Left Front Fender 26, 28
Integrated Power Module C5 BK Left Front Fender 26, 28
Integrated Power Module C6 BK Left Front Fender 25, 26, 28
Integrated Power Module C7 GY Left Front Fender 26, 28
Integrated Power Module FCM BK In IPM N/S
Knock Sensor BK Left Rear of Engine 5, 7, 9
License Lamp-Left BK At Rear Bumper 50, 51
License Lamp-Right BK At Rear Bumper 50, 51
Lift Pump Motor BK Near T/O for WIF Sensor N/S
Line Pressure Sensor BK Right Rear of Transmission 15, 18
Lumbar Motor-Driver DK GY At Driver Seat N/S
Lumbar Motor-Passenger BK At Passenger Seat N/S
Manifold Absolute Pressure Sensor GY Left Front of Intake Manifold 6
Mode Door Actuator 1 BK Right Side of HVAC N/S
DR8W-91 CONNECTOR/GROUND/SPLICE LOCATION 8W - 91 - 5
CONNECTOR/GROUND/SPLICE LOCATION (Continued)

8W-97 POWER DISTRIBUTION
TABLE OF CONTENTS
page page
POWER DISTRIBUTION
DESCRIPTION..........................1
OPERATION............................1
SPECIAL TOOLS
POWER DISTRIBUTION SYSTEMS.........2
CIGAR LIGHTER OUTLET
DESCRIPTION..........................2
OPERATION............................2
DIAGNOSIS AND TESTING - CIGAR LIGHTER
OUTLET.............................2
INTEGRATED POWER MODULE
DESCRIPTION..........................3
OPERATION............................3
REMOVAL.............................3
INSTALLATION..........................4
FRONT CONTROL MODULE
DESCRIPTION..........................5OPERATION............................5
DIAGNOSIS AND TESTING - FRONT
CONTROL MODULE....................5
REMOVAL.............................6
INSTALLATION..........................6
IOD FUSE
DESCRIPTION..........................6
OPERATION............................6
REMOVAL.............................7
INSTALLATION..........................7
POWER OUTLET
DESCRIPTION..........................7
OPERATION............................7
DIAGNOSIS AND TESTING - POWER
OUTLET.............................7
REMOVAL.............................8
INSTALLATION..........................8
POWER DISTRIBUTION
DESCRIPTION
This group covers the various standard and
optional power distribution components used on this
model. The power distribution system for this vehicle
consists of the following components:
²Integrated Power Module (IPM)
²Front Control Module (FCM)
²Power Distribution Center (PDC)
²Power Outlets
²Cigar Lighter Outlets
²Relays
Refer to Wiring Diagrams for complete circuit sche-
matics.
The power distribution system also incorporates
various types of circuit control and protection fea-
tures, including:
²Automatic resetting circuit breakers
²Blade-type fuses
²Cartridge fuses
²Relays
Following are general descriptions of the major
components in the power distribution system. See the
owner's manual in the vehicle glove box for more
information on the features and use of all of the
power distribution system components.
OPERATION
The power distribution system for this vehicle is
designed to provide safe, reliable, and centralized dis-
tribution points for the electrical current required to
operate all of the many standard and optional facto-
ry-installed electrical and electronic powertrain,
chassis, safety, security, comfort and convenience sys-
tems. At the same time, the power distribution sys-
tem was designed to provide ready access to these
electrical distribution points for the vehicle techni-
cian to use when conducting diagnosis and repair of
faulty circuits. The power distribution system can
also prove useful for the sourcing of additional elec-
trical circuits that may be required to provide the
electrical current needed to operate many accessories
that the vehicle owner may choose to have installed
in the aftermarket.
DR8W-97 POWER DISTRIBUTION 8W - 97 - 1

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)

INSTRUMENT PANEL
TABLE OF CONTENTS
page page
CLUSTER BEZEL
REMOVAL.............................49
INSTALLATION.........................49
ASH RECEIVER
REMOVAL.............................50
INSTALLATION.........................51
CUP HOLDER
REMOVAL.............................51
INSTALLATION.........................51
GLOVE BOX
REMOVAL.............................52
INSTALLATION.........................52
GLOVE BOX LATCH
REMOVAL.............................52
INSTALLATION.........................52
INSTRUMENT PANEL ASSEMBLY
REMOVAL.............................52
INSTALLATION.........................55
INSTRUMENT PANEL HEADLAMP SWITCH
BEZEL
REMOVAL.............................56
INSTALLATION.........................56INSTRUMENT PANEL CENTER BEZEL
REMOVAL.............................57
INSTALLATION.........................57
INSTRUMENT PANEL DRIVER SIDE BEZEL
REMOVAL.............................58
INSTALLATION.........................58
INSTRUMENT PANEL TOP COVER
REMOVAL.............................58
INSTALLATION.........................59
INSTRUMENT PANEL LOWER SURROUND
REMOVAL.............................59
INSTALLATION.........................59
STEERING COLUMN OPENING COVER
REMOVAL.............................60
INSTALLATION.........................60
STEERING COLUMN OPENING SUPPORT
BRACKET
REMOVAL.............................60
INSTALLATION.........................60
STORAGE BIN
REMOVAL.............................61
INSTALLATION.........................61
CLUSTER BEZEL
REMOVAL
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, DISABLE THE AIRBAG SYSTEM BEFORE
ATTEMPTING ANY STEERING WHEEL, STEERING
COLUMN, SEAT BELT TENSIONER, OR INSTRU-
MENT PANEL COMPONENT DIAGNOSIS OR SER-
VICE. DISCONNECT AND ISOLATE THE BATTERY
NEGATIVE (GROUND) CABLE, THEN WAIT TWO
MINUTES FOR THE AIRBAG SYSTEM CAPACITOR
TO DISCHARGE BEFORE PERFORMING FURTHER
DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE
WAY TO DISABLE THE AIRBAG SYSTEM. FAILURE
TO TAKE THE PROPER PRECAUTIONS COULD
RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT
AND POSSIBLE PERSONAL INJURY.
(1) Remove the headlamp switch bezel. (Refer to
23 - BODY/INSTRUMENT PANEL/INSTRUMENT
PANEL SWITCH BEZEL - REMOVAL)
(2) Remove the center bezel. (Refer to 23 - BODY/
INSTRUMENT PANEL/INSTRUMENT PANEL
CENTER BEZEL - REMOVAL)(3) Remove the two top screws. (Fig. 1)
(4) Using a trim stick C-4755 or equivalent, sepa-
rate the two lower clips.
(5) Disengage the two top attachment bosses and
remove the bezel.
INSTALLATION
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, DISABLE THE AIRBAG SYSTEM BEFORE
ATTEMPTING ANY STEERING WHEEL, STEERING
COLUMN, SEAT BELT TENSIONER, OR INSTRU-
MENT PANEL COMPONENT DIAGNOSIS OR SER-
VICE. DISCONNECT AND ISOLATE THE BATTERY
NEGATIVE (GROUND) CABLE, THEN WAIT TWO
MINUTES FOR THE AIRBAG SYSTEM CAPACITOR
TO DISCHARGE BEFORE PERFORMING FURTHER
DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE
WAY TO DISABLE THE AIRBAG SYSTEM. FAILURE
TO TAKE THE PROPER PRECAUTIONS COULD
RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT
AND POSSIBLE PERSONAL INJURY.
(1) Position the cluster bezel over the cluster and
seat the outer bosses over the posts on the left and
right sides.
DRINSTRUMENT PANEL 23 - 49

(1) Install the cupholder and install the two upper
screws from the left to the right.
(2) Install the lower two screws from the left to
the right.
(3) Fold down the inner cover and install the two
inner screws.
(4) Install the center bezel. (Refer to 23 - BODY/
INSTRUMENT PANEL/INSTRUMENT PANEL
CENTER BEZEL - INSTALLATION)
(5) Install the airbag control module trim cover.
GLOVE BOX
REMOVAL
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, DISABLE THE AIRBAG SYSTEM BEFORE
ATTEMPTING ANY STEERING WHEEL, STEERING
COLUMN, SEAT BELT TENSIONER, OR INSTRU-
MENT PANEL COMPONENT DIAGNOSIS OR SER-
VICE. DISCONNECT AND ISOLATE THE BATTERY
NEGATIVE (GROUND) CABLE, THEN WAIT TWO
MINUTES FOR THE AIRBAG SYSTEM CAPACITOR
TO DISCHARGE BEFORE PERFORMING FURTHER
DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE
WAY TO DISABLE THE AIRBAG SYSTEM. FAILURE
TO TAKE THE PROPER PRECAUTIONS COULD
RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT
AND POSSIBLE PERSONAL INJURY.
(1) Partially open the glove box.(2) From the inside of the box press down on the
rearward edge of the bin and lower the glove box
fully past the stops.
(3) Lift the box assembly off of the hinges and
remove.
INSTALLATION
(1) Engage the glove box hinges and partially
close.
(2) From the inside of the box press down on the
rearward edge of the bin and raise the glove box fully
past the stops.
(3) Check for proper glove box operation.
GLOVE BOX LATCH
REMOVAL
(1) Remove the glove box. (Refer to 23 - BODY/IN-
STRUMENT PANEL/GLOVE BOX - REMOVAL)
(2) Remove the 11 screws and separate the box
and inner panel from the outer door.
(3) Remove the two latch screws and remove the
latch.
INSTALLATION
(1) Install the latch and install the two screws.
(2) Install the door inner cover and box and install
the 11 screws.
(3) Install the glove box. (Refer to 23 - BODY/IN-
STRUMENT PANEL/GLOVE BOX - INSTALLA-
TION)
INSTRUMENT PANEL
ASSEMBLY
REMOVAL
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, DISABLE THE AIRBAG SYSTEM BEFORE
ATTEMPTING ANY STEERING WHEEL, STEERING
COLUMN, SEAT BELT TENSIONER, OR INSTRU-
MENT PANEL COMPONENT DIAGNOSIS OR SER-
VICE. DISCONNECT AND ISOLATE THE BATTERY
NEGATIVE (GROUND) CABLE, THEN WAIT TWO
MINUTES FOR THE AIRBAG SYSTEM CAPACITOR
TO DISCHARGE BEFORE PERFORMING FURTHER
DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE
WAY TO DISABLE THE AIRBAG SYSTEM. FAILURE
TO TAKE THE PROPER PRECAUTIONS COULD
RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT
AND POSSIBLE PERSONAL INJURY.
Fig. 6 CUPHOLDER - OUTER FASTENERS
1 - SCREWS (4)
2 - CUPHOLDER
23 - 52 INSTRUMENT PANELDR
CUP HOLDER (Continued)

(14) Remove the floor console, if equipped. (Refer
to 23 - BODY/INTERIOR/FLOOR CONSOLE -
REMOVAL)
(15) Remove the center bracket bolts. (Fig. 10)
(16) Disconnect the air bag control module electri-
cal connector.
(17) Remove the right cowl trim cover. (Refer to 23
- BODY/INTERIOR/COWL TRIM - REMOVAL)
(18) Disconnect the two electrical connectors. (Fig.
11 )(19) Disconnect the radio antenna. (Fig. 12)
(20) Remove the one HVAC screw. (Fig. 13)
(21) Using a trim stick C-4755 or equivalent, from
the notch on the bottom, remove the right end cap.
(Fig. 14)
(22) Remove the right a-pillar trim. (Refer to 23 -
BODY/INTERIOR/A-PILLAR TRIM/GRAB HANDLE
- REMOVAL)
Fig. 10 CENTER MOUNTING BOLTS
1 - INSTRUMENT PANEL
2 - BOLTS
Fig. 11 RIGHT WIRE HARNESS CONNECTIONS
1 - COWL SIDE PANEL
2 - ELECTRICAL CONNECTORS
Fig. 12 ANTENNA CONNECTION
1 - ANTENNA CABLE
2 - RADIO CABLE
Fig. 13 HVAC/INSTRUMENT PANEL MOUNTING
1-HVAC
2 - MOUNTING SCREW
3 - LOWER SURROUND SCREWS
4 - GLOVE BOX OPENING
23 - 54 INSTRUMENT PANELDR
INSTRUMENT PANEL ASSEMBLY (Continued)

INSTALLATION
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, DISABLE THE AIRBAG SYSTEM BEFORE
ATTEMPTING ANY STEERING WHEEL, STEERING
COLUMN, SEAT BELT TENSIONER, OR INSTRU-
MENT PANEL COMPONENT DIAGNOSIS OR SER-
VICE. DISCONNECT AND ISOLATE THE BATTERY
NEGATIVE (GROUND) CABLE, THEN WAIT TWO
MINUTES FOR THE AIRBAG SYSTEM CAPACITOR
TO DISCHARGE BEFORE PERFORMING FURTHER
DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE
WAY TO DISABLE THE AIRBAG SYSTEM. FAILURE
TO TAKE THE PROPER PRECAUTIONS COULD
RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT
AND POSSIBLE PERSONAL INJURY.
(1) Position the top cover and fully seat the front
clips by pushing the cover forward and down.
(2) Fully seat the rear clips.
INSTRUMENT PANEL LOWER
SURROUND
REMOVAL
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, DISABLE THE AIRBAG SYSTEM BEFORE
ATTEMPTING ANY STEERING WHEEL, STEERING
COLUMN, SEAT BELT TENSIONER, OR INSTRU-
MENT PANEL COMPONENT DIAGNOSIS OR SER-
VICE. DISCONNECT AND ISOLATE THE BATTERY
NEGATIVE (GROUND) CABLE, THEN WAIT TWO
MINUTES FOR THE AIRBAG SYSTEM CAPACITORTO DISCHARGE BEFORE PERFORMING FURTHER
DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE
WAY TO DISABLE THE AIRBAG SYSTEM. FAILURE
TO TAKE THE PROPER PRECAUTIONS COULD
RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT
AND POSSIBLE PERSONAL INJURY.
(1) Using a trim stick C-4755 or equivalent, at
notch in the bottom, remove the passenger side end-
cap.
(2) Remove the passenger side cowl trim panel.
(Refer to 23 - BODY/INTERIOR/COWL TRIM -
REMOVAL)
(3) Remove the glove box. (Refer to 23 - BODY/IN-
STRUMENT PANEL/GLOVE BOX - REMOVAL)
(4) Remove the cup holder, if equipped. (Refer to
23 - BODY/INSTRUMENT PANEL/CUP HOLDER -
REMOVAL)
(5) Remove the storage bin, if equipped. (Refer to
23 - BODY/INSTRUMENT PANEL/STORAGE BIN -
REMOVAL)
(6) Remove the ash receiver. (Refer to 23 - BODY/
INSTRUMENT PANEL/ASH RECEIVER -
REMOVAL)
(7) Remove the steering column opening cover.
(Refer to 23 - BODY/INSTRUMENT PANEL/STEER-
ING COLUMN OPENING COVER - REMOVAL)
(8) Remove the 12 screws around the glove box
opening.
(9) Remove the nine remaining screws around the
cup holder/storage bin and ash receiver area and
remove the surround.
(10) Disconnect the 12V power outlet electrical
connector.
INSTALLATION
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, DISABLE THE AIRBAG SYSTEM BEFORE
ATTEMPTING ANY STEERING WHEEL, STEERING
COLUMN, SEAT BELT TENSIONER, OR INSTRU-
MENT PANEL COMPONENT DIAGNOSIS OR SER-
VICE. DISCONNECT AND ISOLATE THE BATTERY
NEGATIVE (GROUND) CABLE, THEN WAIT TWO
MINUTES FOR THE AIRBAG SYSTEM CAPACITOR
TO DISCHARGE BEFORE PERFORMING FURTHER
DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE
WAY TO DISABLE THE AIRBAG SYSTEM. FAILURE
TO TAKE THE PROPER PRECAUTIONS COULD
RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT
AND POSSIBLE PERSONAL INJURY.
(1) Install the surround and install all 21 screws.
(2) Install the steering column opening cover.
(Refer to 23 - BODY/INSTRUMENT PANEL/STEER-
ING COLUMN OPENING COVER - INSTALLA-
TION)
Fig. 20 INSTRUMENT PANEL COVERS
1 - TOP COVER
2 - INSTRUMENT PANEL
3 - AIR BAG MODULE COVER
4 - END CAP
DRINSTRUMENT PANEL 23 - 59
INSTRUMENT PANEL TOP COVER (Continued)