1993 DODGE TRUCK Service Repair Manual

8L
- 6

LAMPS

•

ASSEMBLY
* J908L-63

Fig.
8
Tail,
Stop,
Turn
Signal,
Rear
Side
Marker and
Back-Up
Lamp

(3)
Disconnect electrical connector from bulb and
lens assembly (Figs. 9 and 10).
(4) Connect electrical connector to new lamp and
snap into housing. J908L-73

Fig.
9
Wheel
Flare
Clearance
Lamp

CAB
CLEARANCE LAMPS
To change bulb, remove lamp as follows: (1) Remove mounting screws (Fig. 11).
(2) Slide lens down and out of housing. (3) Twist out socket and replace bulb.

Fig.
10 Rear Clearance
Lamps

•

LAMPS
8L - 7 (4) To install, reverse procedures. Make sure the
grounding eyelet is under a mounting screw.

Fig.
11 Cab Clearance
Lamps

CARGO
LAMP
STANDARD
CAB (1) Remove two mounting screws. (2) Pull assembly out and disconnect wiring con­
nector. (3) To install, reverse the procedures.

J908L-59.

Fig.
12
Cargo
Lamp—Standard Cab

CLUB
CAB (1) Remove two mounting screws.
(2) Pull assembly out and disconnect wiring con­
nectors.
(3) To install, reverse the procedures.

LICENSE
LAMP
STANDARD BUMPER
(1) Remove rear license plate.
(2) Remove 2 lamp mounting screws.
(3) Remove lamp assembly. (4) Remove 2 screws attaching lamp lens to hous­
ing.
Fig.
14
License
Plate
Lamp
- Standard Rear
Bumper

STEP BUMPER
(1) Remove 2 lamp assembly mounting screws
(Fig. 15)
(2) Remove lamp from bumper.
(3) Disconnect wire connector.
(4) Remove lens from lamp.
(5) Twist out bulb.
(6) To install, reverse the removal procedures.
WITHOUT REAR BUMPER (1) Remove screws holding lamp assembly to li­
cense bracket (Fig. 16).
(2) Disconnect electrical connector and remove
lamp assembly.
(3) Install new lamp assembly with screws and
connect electrical connector.

8L
- 8
LAMPS

CONNECTOR

CUP
FRONT

LAMP
ASSEMBLY
LICENSE
PLATE

SCREW
LAMP
ASSEMBLY

LICENSE
PLATE

RR8LD24

Fig.
15
License
Plate
Lamps
-
Step
Bumper
TO
TAIL,
STOP,

TURN
SIG. AND
BACK
UP
LAMPS

LICENSE
PLATE
LICENSE
PLATE
LAMP
AND

LAMP
CONNECTOR
BRACKET
ASSEMBLY
J908L-74

Fig.
16
License
Plate
Lamp
Without Rear
Bumper

UNDERHOOD
LAMP
When equipped, the underhood lamp is installed on
the hood left, rear inner panel (Fig, 17). The lamp is
illuminated when the hood is opened (Fig. 18). UNDERHOOD LAMP BULB REPLACEMENT

REMOVAL
(1) Disconnect the wire connector from the under­
hood lamp (Fig. 17).
(2) Rotate the bulb counter-clockwise. Remove it
from the lamp base socket (Fig. 18).

INSTALLATION
(1) Insert the replacement bulb in the lamp base
socket. Rotate it clockwise.
(2) Connect the wire connector to the lamp (Fig.

17).

UNDERHOOD LAMP REPLACEMENT

REMOVAL
(1) Disconnect the wire connector from the lamp
(Fig. 17). (2) Rotate the bulb counter-clockwise. Remove it
from the lamp base socket (Fig. 18). (3) Remove the screw that attaches the lamp re­
flector and support bracket to the hood inner panel (Fig. 17).
(4) Remove the lamp from the hood inner panel.
INSTALLATION (1) Position the underhood lamp on the hood inner
panel. (2) Install the screw through the lamp and into the
hood panel (Fig. 17). Tighten the screw securely. (3) Insert a replacement bulb in the lamp base
socket (Fig. 18). Rotate it clockwise. (4) Connect the wire connector to the lamp (Fig.

17).
HOOD

J9223-446

Fig.
17
Underhood
Lamp
DAYTIME
RUNNING
LIGHT
MODULE
(CANADA

ONLY)
The headlamps on vehicles sold in Canada will il­
luminate when the ignition is ON. The module also
receives a signal from the distance sensor. This pro-
SUPPORT

BRACKET RETAINER
LIQUID

TAB SWITCH
ENCLOSURE

WIRE
HARNESS
CONNECTOR

\
1

d1^—1—l
L/

CMD>

LAMP

REFLECTOR
BULB
(105)
BASE
J9281"1
Fig.
18
Underhood
Lamp
Components

LAMPS
8L - 9
vides a constant Lights On condition while the vehi­
cle is rolling. The lamps illuminate at less than 50%
of normal intensity.
The Daytime Running Light Module is located on
the right inner fender (Fig. 19).
(1) Remove the bolt holding the module and
bracket to the vehicle. (2) Disconnect the electrical connector.
(3) To install the module, reverse the removal pro­
cedures.
Fig.
19 Daytime Running Light Module

8L
- 10
LAMPS

•
INTERIOR

DOME LAMP

STANDARD
CAB (1) Remove two screws and lens.
(2) Twist bulb to remove.
LENS
SCREW
J908L-65

Fig.
1
Dome
Lamp
(Standard Cab)

EXTENDED
CAB (1) Squeeze the front and rear of the lens together
and pull down to remove (Fig. 2).
(2) Pull bulb down to remove from socket.

SPORT
UTILITY (1) Squeeze the front and rear of the lens together
and pull down to remove (Fig. 3). (2) Pull bulb down to remove from socket.

READING LAMP (SPORT
UTILITY)
(1) Squeeze the front and rear of the lens together
and pull down to remove (Fig. 4).
J908L-66
Fig.
2
Dome
Lamp
(Extended Cab)
LAMPS

LENS
J918L-30

Fig.
3
Dome
Lamp
(Sport
Utility)
(2) Remove 2 screws holding the dome and reading
lamp assembly to the mounting bracket.
(3) Lower the assembly.
(4) Remove the bulb.
ROOF

MOUNTING
SCREW
J918L-31

Fig.
4
Reading
Lamp

•

LAMPS
8L - 11
BULB
APPLICATION

GENERAL
INFORMATION
The following Bulb Application Table lists
the

lamp title
on the
left side
of the
column
and
part
number
on the
right.

CAUTION:
Do not use
bulbs
that
have
a
higher
can­

dle power than
the
bulb
listed
in the
Bulb
Applica­

tion Table.
Damage
to
lamp
can
result.

EXTERIOR LAMPS
Auxiliary Turn Signal (Snow Plow) 2057
Auxiliary Headlamps (Snow Plow) .6054
Back-up....................... .......1156 Cargo Lamp..
922

Clearance Lamps
194

Front Side Marker
168

Headlamp/Sealed Beam .6052
License Plate
168
Park/Turn Signal 2057
TaiyStop/Turn Signal ...2057

INTERIOR LAMPS

DIMMER CONTROLLED LAMPS Service procedures
for
most
of the
lamps
in the in­

strument panel
are
located
in
Group
8E,
Instrument
Panel
and
Gauges. Some components have lamps
that
can
only
be
serviced
by an
Authorized Service Center (ASC). These components must
be
removed
from
the
vehicle
for
service. Contact local dealer
for
location
of
nearest
ASC.
A/C Heater Control
158

Ash Receiver
..158

Gear Shift Selector...........................................PC194
Heater Control
158

Instrument Cluster.. PC 194
Radio
ASC
Snow Plow Control
.158

INDICATOR LAMPS Service procedures
for
most
of the
lamps
in the in­

strument panel,
and
switches
are
located
in
Group

8E,
Instrument Panel
and
Gauges. Anti-lock Brake PC194
Brake Warning PC194 Check Engine PC194
Engine
Oil
Pressure
158

Fasten Seat Belts.. PC 194 Four Wheel Drive ....158
Hazard Flasher
194

High Beam PC194
Low Fuel....... JPC194
Maintenance Required PC 194
Transmission Temperature ..PC 194 Turn Signal PC194
NON-DIMMING LAMPS Service procedures
for
most
of the
lamps
in the
fol­
lowing list
can be
found
in
Group
23,
Body.
Dome
1004

Engine Compartment ...105 Glove Compartment....
1891

Ignition Lock
ASC

Reading Lamp
912

•

REAR
WINDOW DEFOGGER
8N - 1
REAR
WINDOW
DEFOGGER

CONTENTS
page

REPAIR
PROCEDURES (GRID LINES,
TERMINALS,
AND
PIGTAILS)
3

GENERAL
INFORMATION
The electrically heated rear window defogger
is

available
on
Ramcharger with sunscreen glass only. The system consists
of a
rear window with
two
ver­
tical
bus
bars
and a
series
of
electrically connected
grid lines baked
on the
inside surface. Circuit protection
for the
heated grid circuit
is
pro­
vided
by a 18
gauge fusible link wire located
in the

engine compartment.
The
relay circuit
is
protected
by
a 20 amp
fuse, located
in the
fuse block. When
the
rear window defogger switch
is
placed
in

the
ON
position, current
is
directed
to
rear window
grid lines.
The
heated grid lines
in
turn heat
the

rear window
to
clear
the
surface
of fog or
snow.

CAUTION;
Grid lines
can be
damaged
or
scraped
off
with
sharp instruments. Care should
be
taken
in
page

SERVICE
PROCEDURES
4

TEST
PROCEDURES
1

cleaning
the
glass
or
removing foreign materials,

decals
or
stickers. Normal
glass
cleaning solvents
or
hot
water
used
with
rags
or
toweling
is
recom­ mended.

SYSTEM
DESCRIPTION CONTROL
SWITCH/TIMER
RELAY MODULE
The control switch
and
timer relay
are
integrated
into
a
single panel mounted assembly. Actuating
the
switch energizes
the
electronic timing circuit. This
allows current
to
flow through
the
grid system
for

approximately
10
minutes,
or
until either
the
control
switch
or
ignition
is
turned
off. An
indicating lamp
illuminates
a
lens inlaid
in the
control switch.

TEST PROCEDURES

SYSTEM
TEST
Electrically heated rear window defogger operation
can
be
checked in-vehicle
in the
following manner: (1) Turn
the
ignition
ON.

(2) Turn rear window defogger control switch
ON.

(3) Monitor vehicle voltmeter. With
the
control
switch
ON, a
distinct needle deflection should
be

noted. (4)
The
rear window defogger operation
can be

checked
by
feeling
the
glass.
A
distinct difference
in

temperature between
the
grid lines
and
adjacent clear glass
can be
detected
in 3 to 4
minutes
of
oper­ation. (5) Contact negative lead
of a DC
voltmeter
(Fig.

1),
to
terminal
"B"
(passenger side). Contact positive
lead
to
terminal
"A"
(driver side).
The
voltmeter
should read
10-14
volts. Only steps
(3) and (4) or (5)
above will confirm sys­
tem operation. Indicator light illumination means
that there
is
power available
at the
output
of the re­
lay only,
and
does
not
verify system operation.
If rear window defogger does
not
operate,
the
prob­
lem should
be
isolated
in the
following manner:
(1) Confirm that ignition switch
is ON.
VOLTMETER

Fig.
1
Grid
Line
Test (2) Ensure that heated rear window feed wire
is

connected
to
terminal
or
pigtail
and
that ground wire
is
in
fact grounded.
(3) Ensure that fuse
is
operational
and all
electri­
cal connections
are
secure.
When above steps have been completed
and the

system
is
still inoperative,
one or
more
of the
follow­
ing
is
defective:
(a) Control switch/timer relay module.