1995 JEEP YJ light

INTERIOR LAMPS
INDEX
page page
Dome Lamp ReplacementÐXJ............... 17
Dome/Courtesy Lamp Service InformationÐXJ . . . 16
Dome/Courtesy Lamp Trouble DiagnosisÐXJ.... 16Lighted Vanity Mirror Trouble DiagnosisÐXJ..... 16
Lighted Vanity MirrorÐXJ................... 16
Overhead ConsoleÐXJ..................... 17
DOME/COURTESY LAMP SERVICE
INFORMATIONÐXJ
Voltage is applied at all times via the dome lamp
fuse to each of the interior lamp bulbs. The interior
lamp bulbs illuminate when they are connected to
body ground via the switch:
²Headlamp switch.
²Glove box switch.
²Door pillar switch.
²Liftgate switch (if the cargo lamp is ON).
If equipped with Security Alarm Module, refer to
Group 8Q, Vehicle Theft Security System.
DOME/COURTESY LAMP TROUBLE DIAGNOSISÐ
XJ
ALL LAMPS INOPERATIVE
(1) Rotate the headlamp switch rheostat clockwise.
The lamps should light. If not OK, remove, inspect
and test the dome lamp fuse. Replace if bad.
(2) If the fuse is OK, repair the open circuit in the
wire harness to vehicle body ground.
ONE LAMP INOPERATIVE
(1) Measure the resistance across the bulb holder
terminals. The ohmmeter should indicate zero ohms.
If not, replace the bulb.
(2) Measure the voltage between the voltage side
of the bulb holder and vehicle body ground. The volt-
meter should indicate battery voltage. If not, repair
the open circuit in the wire harness to the splice.
LAMPS INOPERATIVE WITH ONE OR MORE
DOORS OPENED
(1) Remove the inoperative switch from the door
pillar and connect the switch wire directly to ground.
The lamp should light.
(2) If not, check for an open circuit in black
(ground) wire. Repair as necessary. If lamps still do
not light, replace the switch.
LIGHTED VANITY MIRRORÐXJ
SERVICE INFORMATION
Both the driver and the front passenger sunvisor
can be equipped with a lighted vanity mirror. A lamplocated at each side of the vanity mirror. The lamps
are switched ON automatically when the mirror
cover is lifted (Fig. 1).
Voltage is applied directly to the vanity lamp bulbs
via the dome lamp fuse.
LIGHTED VANITY MIRROR TROUBLE
DIAGNOSISÐXJ
VANITY LAMPS INOPERATIVE
(1) Remove, inspect and test the dome lamp fuse.
Replace if defective.
(2) Test the dome lamp operation. If OK, go to the
next step. If not OK, repair the open circuit in the
wire harness from the splice.
(3) Measure the voltage between the pink wire on
the switch connector and vehicle body ground. The
voltmeter should indicate battery voltage. If not OK,
repair the open circuit in the wire harness from the
splice.
(4) Connect a jumper wire from the ground side of
the switch to a good vehicle body ground. Measure
the resistance to vehicle body ground. The ohmmeter
should indicate zero ohms. If not, repair the open cir-
cuit in the wire harness to vehicle body ground.
Fig. 1 Lighted Vanity Mirror
8L - 16 LAMPSÐXJ VEHICLESJ

BULB APPLICATIONÐXJ VEHICLES
GENERAL INFORMATION
The following Bulb Application Table lists the lamp
title on the left side of the column and trade number
or 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.
Do not touch halogen bulbs with fingers or other
oily surfaces. Bulb life will be reduced.
EXTERIOR LAMPSÐXJ
Back-up .................................................................1156
Center High Mounted Stoplamp ..........................922
Fog ............................................................................H3
Front Side Marker .................................................194
Headlamp/Sealed Beam....................................H6054
License Plate ..........................................................168
License Plate W/Outside Spare ..............................67
Park/Turn Signal ............................................2057NA
Tail/Stop ................................................................2057
Turn Signal ...........................................................1156
INTERIOR LAMPSÐXJ
Service procedures for most of the lamps in the in-
strument panel, Instrument cluster and switches are
located in Group 8E, Instrument Panel and Gauges.
Some components have lamps that can only be ser-
viced by an Authorized Service Center (ASC) after
the component is removed from the vehicle. Contact
local dealer for location of nearest ASC.
Cargo .......................................................................561
Dome .......................................................................561
Dome/Reading.........................................................906Glove Compartment ...............................................194
Overhead Console ..................................................912
Under Hood ............................................................105
Vanity Mirror ...........................................................74
Underpanel Courtesy.............................................168
INDICATOR LAMPS
Service procedures for most of the lamps in the in-
strument panel, instrument cluster and switches are
located in Group 8E, Instrument Panel and Gauges.
A/C Control ...............................................................74
Airbag ........................................................................74
Anti-lock Brake ........................................................74
Ash Receiver .........................................................1891
Brake Warning .........................................................74
Check Engine ...........................................................74
Cigar Lighter ............................................................53
Diesel Wait ...............................................................74
Fasten Seat Belts ....................................................74
Four Wheel Drive ....................................................74
Generator ................................................................194
Generator/Diesel.......................................................74
Heater Control .........................................................74
High Beam..............................................................194
Illumination ............................................................194
Low Fuel .................................................................194
Low Washer Fluid....................................................74
Radio ......................................................................ASC
Rocker Switch...........................................................37
Seat Belt ...................................................................74
Transfer Case .........................................................658
Transmission Floor Shift.......................................658
Turn Signal.............................................................194
Shift ...........................................................................74
Water In Fuel ...........................................................74
8L - 18 LAMPSÐXJ VEHICLESJ

LAMPS
CONTENTS
page page
BULB APPLICATIONÐYJ VEHICLES......... 32
GENERAL INFORMATION................. 19INTERIOR LAMPS....................... 31
SERVICE PROCEDURES.................. 22
GENERAL INFORMATION
Each vehicle is equipped with various lamp assem-
blies. A good ground is necessary for proper lighting
operation. Grounding is provided by the lamp socket
when it comes in contact with the metal body, or
through a separate ground wire.
When changing lamp bulbs check the socket for
corrosion. If corrosion is present, clean it with a wire
brush and coat the inside of the socket lightly with
Mopar Multi-Purpose Grease or equivalent.
DIAGNOSTIC PROCEDURESÐYJ
When a vehicle experiences problems with the
headlamp system, verify the condition of the batteryconnections, charging system, headlamp bulbs, wire
connectors, relay, high beam dimmer switch and
headlamp switch. Refer to Group 8W, Wiring Dia-
grams for component locations and circuit informa-
tion.
Always begin any diagnosis by testing all of the
fuses and circuit breakers in the system. Refer to
Group 8W, Wiring Diagrams.
JLAMPSÐYJ VEHICLES 8L - 19

SERVICE PROCEDURES
INDEX
page page
Back-Up/Rear Turn Signal/Tail Lamp Bulb
ReplacementÐYJ....................... 28
Center High Mounted Stop Lamp (CHMSL)ÐYJ . . 28
Daytime Running Lights (Canada Only)ÐYJ..... 30
Drl Module ReplacementÐYJ................ 30
Fog Lamp ReplacementÐYJ................. 25
Fog Lamp Switch ReplacementÐYJ........... 26
Fog LampsÐYJ.......................... 23
Front Park/Turn Signal Lamp Bulb ReplacementÐ
YJ ................................... 25
Headlamp Alignment PreparationÐYJ.......... 22Headlamp AlignmentÐYJ................... 22
Headlamp Bulb ReplacementÐYJ............. 23
Headlamp Dimmer Switch ReplacementÐYJ..... 26
Headlamp SwitchÐYJ...................... 26
Headlamp/Fog Lamp Adjustment Using Alignment
ScreenÐYJ............................ 23
Side Marker Lamp Bulb ReplacementÐYJ....... 25
Underhood Lamp Bulb ReplacementÐYJ....... 29
Underhood Lamp ReplacementÐYJ........... 29
Underhood Lamp Service InformationÐYJ....... 28
HEADLAMP ALIGNMENTÐYJ
Headlamps can be aligned using the screen method
provided in this section. Alignment Tool C4466-A or
equivalent can also be used. Refer to instructions
provided with the tool for proper procedures.The
preferred headlamp alignment setting is 0 for
the left/right adjustment and 1(down for the
up/down adjustment.
HEADLAMP ALIGNMENT PREPARATIONÐYJ
(1) Verify headlamp dimmer switch and high beam
indicator operation.
(2) Correct defective components that could hinder
proper headlamp alignment.
(3) Verify proper tire inflation.
(4) Clean headlamp lenses.
(5) Verify that luggage area is not heavily loaded.
(6) Fuel tank should be FULL. Add 2.94 kg (6.5
lbs.) of weight over the fuel tank for each estimated
gallon of missing fuel.
Fig. 1 Headlamp Alignment ScreenÐTypical
8L - 22 LAMPSÐYJ VEHICLESJ

(3) Insert a replacement bulb in the lamp base
socket and rotate it clockwise.
(4) Connect the wire harness connector to the
lamp.
DAYTIME RUNNING LIGHTS (CANADA ONLY)ÐYJ
The Daytime Running Lights (Headlamps) System
is installed on vehicles manufactured for sale in Can-
ada only. The headlamps are illuminated when the
ignition switch is turned to the ON position. The
DRL module receives a vehicle-moving signal from
the vehicle speed sensor. This provides a constant
headlamps-oncondition as long as the vehicle is
moving. The lamps are illuminated at less than 50
percent of normal intensity.
DRL MODULE REPLACEMENTÐYJ
REMOVAL
The daytime running light module is located on the
left fender inner panel below the engine air cleaner
housing.
(1) Remove the engine air cleaner housing for ac-
cess to the DRL module.
(2) Disconnect the wire harness connector from the
module.
(3) Remove the screws that attach the module to
the fender inner panel (Fig. 21).(4) Remove the module from the fender inner
panel.
INSTALLATION
(1) Position the DRL module on the left, fender in-
ner panel.
(2) Install the attaching screws. Tighten the
screws securely.
(3) Connect the wire harness connector to the mod-
ule.
(4) Install the air cleaner housing.
Fig. 21 Daytime Running Lamp Module
8L - 30 LAMPSÐYJ VEHICLESJ

INTERIOR LAMPS
INDEX
page page
Dome/Courtesy Lamp Service InformationÐYJ . . . 31
Dome/Courtesy Lamp Trouble DiagnosisÐYJ.... 31Hardtop Dome/Cargo Lamp Bulb ReplacementÐYJ
Vehicles............................... 31
DOME/COURTESY LAMP SERVICE
INFORMATIONÐYJ
The dome/cargo and underpanel courtesy lamps are
controlled via ON/OFF switches. The ON/OFF
switches are in the lamp ground circuits. Voltage via
the dome/courtesy lamp fuse is applied directly to the
lamp bulbs. When either door is opened, the door pil-
lar switch contacts close and provide a direct path to
vehicle body ground.
The dome/cargo and underpanel courtesy lamps
can also be turned on via the interior lamp illumina-
tion rheostat.
DOME/COURTESY LAMP TROUBLE DIAGNOSISÐ
YJ
ALL LAMPS INOPERATIVE FROM INTERIOR
LAMP ILLUMINATION RHEOSTAT
(1) Rotate the interior lamp illumination rheostat
in an upward direction. The lamps should light. If
not OK, remove, inspect and test the dome lamp
fuse. Replace if bad.
(2) If the fuse is OK, repair the open circuit in the
wire harness to vehicle body ground.
(3) If lamp still does not light, replace the switch.
ONE LAMP INOPERATIVE
(1) Measure the resistance across the bulb holder
terminals. The ohmmeter should indicate zero ohms.
If not, replace the bulb.
(2) Measure the voltage between the voltage side
of the bulb holder and vehicle body ground. The volt-
meter should indicate battery voltage. If not, repair
the open circuit in the wire harness to the splice.
LAMPS INOPERATIVE WITH ONE OR MORE
DOORS OPENED
(1) Remove the inoperative switch from the door
pillar and connect the switch wire directly to ground.
The lamp should light.(2) If not, check for an open circuit in black
(ground) wire. Repair as necessary. If lamps still do
not light, replace the switch.
HARDTOP DOME/CARGO LAMP BULB
REPLACEMENTÐYJ VEHICLES
REMOVAL
(1) Remove the dome/cargo lamp lens by squeezing
it at both sides. This will separate the lens retainer
tabs from the lamp housing shoulders (Fig. 1).
(2) Remove the lens from the lamp housing.
(3) Pull the bulb straight out to remove from the
bulb holder.
INSTALLATION
(1) Insert the replacement bulb in the bulb holder.
(2) Position lens at the lamp housing and force it
into the housing until the retainer tabs are seated.
Fig. 1 Hardtop Dome/Cargo Lamp
JLAMPSÐYJ VEHICLES 8L - 31

BULB APPLICATIONÐYJ VEHICLES
GENERAL INFORMATION
The following Bulb Application Table lists the lamp
title on the left side of the column and trade number
or 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.
Do not touch halogen bulbs with fingers or other
oily surfaces. Bulb life will be reduced.
EXTERIOR LAMPSÐYJ
Back-up .................................................................1156
Center High Mounted Stoplamp ..........................912
Fog ............................................................................H3
Front Side Marker .................................................194
Headlamp/Sealed Beam....................................H6054
Park/Turn Signal..................................................3157
Tail/Stop ................................................................1157
INTERIOR LAMPSÐYJ
Service procedures for most of the lamps in the in-
strument panel, Instrument cluster and switches are
located in Group 8E, Instrument Panel and Gauges.
Some components have lamps that can only be ser-
viced by an Authorized Service Center (ASC) after
the component is removed from the vehicle. Contact
local dealer for location of nearest ASC.Dome/Cargo .........................................................212-2
Glove Compartment ...............................................194
Under Hood ............................................................105
Underpanel Courtesy...............................................89
INDICATOR LAMPS
Service procedures for most of the lamps in the in-
strument panel, instrument cluster and switches are
located in Group 8E, Instrument Panel and Gauges.
A/C Control ...............................................................74
Anti-lock Brake ........................................................74
Ash Receiver .........................................................1891
Brake Warning .........................................................74
Cigar Lighter ............................................................53
Fasten Seat Belts ....................................................74
Four Wheel Drive ....................................................74
Generator ................................................................194
Hazard.......................................................................74
Heater Control .......................................................194
High Beam..............................................................194
Illumination ............................................................194
Low Coolant..............................................................74
Radio ......................................................................ASC
Rocker Switch...........................................................74
Seat Belt ...................................................................74
Shift ...........................................................................74
Turn Signal.............................................................194
8L - 32 LAMPSÐYJ VEHICLESJ

REAR WINDOW DEFOGGER
CONTENTS
page page
DIAGNOSIS............................. 1
GENERAL INFORMATION.................. 1SERVICE PROCEDURES................... 3
GENERAL INFORMATION
The electrically-heated rear window defogger is an
available option on XJ (Cherokee), and YJ (Wrangler)
models equipped with the hardtop roof option. Fol-
lowing are general descriptions of the major compo-
nents in the rear window defogger system. Refer to
Group 8W - Wiring Diagrams for complete circuit de-
scriptions and diagrams.
REAR WINDOW GLASS GRID
The heated rear window glass has two electrically-
conductive vertical bus bars and a series of horizon-
tal grid lines made of a silver-ceramic material,
which is baked on and bonded to the inside surface of
the glass. The grid lines and bus bars comprise a
parallel electrical circuit.
When the rear window defogger switch is placed in
the ON position, current is directed to the rear win-
dow grid lines through the bus bars. The grid lines
heat the rear window to clear the surface of fog or
snow. Circuit protection for the heated grid circuit is
provided by fuse 18 (XJ) or fuse 6 (YJ) in the fuse-
block module.
The grid lines and bus bars are highly resistant to
abrasion. However, it is possible for an open to occur
in an individual grid line resulting in no current flow
through the line. The grid lines can be damaged or
scraped off with sharp instruments. Care should be
taken in cleaning the glass or removing foreign ma-
terials, decals or stickers. Normal glass cleaning sol-
vents or hot water used with rags or toweling is
recommended.A repair kit is available to repair the grid lines and
bus bars, or to reinstall the heated glass pigtail
wires.
DEFOGGER SWITCH
The rear window defogger switch is mounted in the
instrument panel left of the steering column for XJ,
or right of the steering column for YJ. The switch cir-
cuit is protected by fuse 8 (XJ) or fuse 9 (YJ) in the
fuseblock module. Actuating the switch energizes the
relay and electronic timer. A light-emitting diode
(LED) in the switch (XJ), or a indicator lamp in the
switch (YJ), illuminates to indicate when the system
is turned on. The defogger switch can not be re-
paired. If faulty, the switch must be replaced.
DEFOGGER RELAY/TIMER
The defogger relay/timer is located in the relay cen-
ter on XJ models, or taped to the instrument panel
wiring harness behind the parking brake pedal in the
left cowl side area on YJ models. When the rear de-
fogger switch is actuated, the rear defogger relay is
energized. This causes current to flow through the
grid circuit for approximately 10 minutes, or until
the rear window defogger switch or ignition switch
are turned off.
DIAGNOSIS
SYSTEM TESTS
Electrically-heated rear window defogger operation
can be confirmed in the following manner:
(1) Turn the ignition switch to the ON position.
(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 within 3 to 4 minutes of
operation.
(5) Using a DC voltmeter, contact terminal A (Fig.
1) (passenger side) with the negative lead, and termi-
JREAR WINDOW DEFOGGER 8N - 1