bulb CHEVROLET DYNASTY 1993 User Guide

(5) For installation reverse above procedure.
(6) Check for proper operation of all components
which are controlled by the pod mounted switch.
TURN SIGNAL AND HAZARD WARNING FLASHER
LOCATION
AA, AC, AP AND AY BODIES
The turn signal flasher and the hazard warning
flasher are two separate plug-in type units. On AC and AY both flashers are on the relay mod-
ule (Fig. 10).
On AA and AP Bodies the hazard flasher is located
on the relay module (Fig. 11). The turn signal flasher
is on the driver's side of A/C duct for AA Body (Fig.
12) and center A/C duct for AP Body.
AG AND AJ BODIES
The turn signal flasher and the hazard warning
flasher are combined into one unit called a combina-
tion flasher (combo-flasher). The combo-flasher con-
trols the flashing of the hazard warning system and the turn signal system. An inoperative bulb or in-
complete turn signal circuit will result in an increase
in flasher speed. The combo-flasher is located under the instrument
panel, right of the steering column and is clipped on
the A/C distribution duct. The combo-flasher is yel-
low in color for ease of identification.TURN SIGNAL RELAYSÐAG AND AJ BODIES
The AG and AJ models are equipped with four
turn signal relays.
Fig. 9 Remote Turn Signal SwitchÐAG and AJ Bodies
Fig. 10 Turn Signal and Hazard WarningFlasherÐAC and AY Bodies
Fig. 11 Hazard Warning FlasherÐAA and AP Bodies
Fig. 12 Turn Signal FlasherÐAA Body
8J - 6 TURN SIGNALS AND HAZARD WARNING FLASHER Ä

LAMPS
CONTENTS
page page
BULB APPLICATION TABLE ............... 38
CONCEALED HEADLAMPS ................ 27
EXTERIOR LAMP SWITCHES AND HEADLAMP ALIGNMENT ........................... 3
EXTERIOR LAMP SYSTEMS .............. 25
EXTERIOR LAMPSÐAA BODY ............. 7
EXTERIOR LAMPSÐAC BODY ............ 10 EXTERIOR LAMPSÐAG BODY
............ 14
EXTERIOR LAMPSÐAJ BODY ............ 16
EXTERIOR LAMPSÐAP BODY ............ 19
EXTERIOR LAMPSÐAY-BODY ............ 22
GENERAL INFORMATION .................. 1
ILLUMINATED ENTRY SYSTEM ........... 33
GENERAL INFORMATION
Each vehicle is equipped with lamps used for illumi-
nating and indicating purposes. A circuit must have a
good ground to be complete. Circuit ground occurs
when the lamp socket makes contact with the metal
body. On vehicles with plastic lamps, a wire between
the socket and the body makes the grounds. When changing lamp bulbs, check the socket for
corrosion. If corrosion is present, clean contacts with a
wire brush and coat the inside of the socket with
Mopar tMulti-purpose Grease or equivalent.
CAUTION: Do not touch the glass of halogen bulbs
with fingers or any possibly oily surface, reduced
bulb life will result.
BODY IDENTIFICATION
Throughout this Group, references are made to the
vehicle family or body code. To decode the vehicle
identification plates, refer to the Introduction Section
at the front of this manual.
DIAGNOSTIC PROCEDURES
Begin electrical system failure diagnosis by testing
all related fuses and circuit breakers in the fuse block
and engine compartment. When a vehicle experiences problems with the head-
lamp system, verify the condition of the battery con-
nections, charging system, headlamp bulbs, wire con-
nectors, relay, high beam dimmer switch and headlamp
switch. Refer to Wiring Diagrams manual for compo-
nent locations and circuit information.
SYMPTOM
Headlamps are dim when engine is idling of
with ignition turned OFF. Canada cars must
have lamps ON. ACTION
² Clean battery terminal clamps and posts. Refer to
Group 8B, Battery/Starter/Generator Service for
proper procedures.
² Test charging system output. Refer to Group 8A,
Battery/Starting/Charging Systems Diagnostics for
proper testing procedures.
² Test for high resistance in headlamp circuits.
² Defective headlamp bulb.
SYMPTOM
Bulbs burn out frequently.
ACTION
² Test charging system output. Refer to Group 8A,
Battery/Starting/Charging Systems Diagnostics for
proper testing procedures.
² Check for loose or corroded connector terminals or
splices in headlamp circuits. Refer to Wiring Diagrams
manual for component and splice locations.
SYMPTOM
Headlamps are dim with engine running above
idle. Canada cars must have lamps ON.
ACTION
² Test charging system output. Refer to Group 8A,
Battery/Starting/Charging Systems Diagnostics for
proper testing procedures.
² Test for high resistance in headlamp circuits.
² Defective headlamp bulb.
SYMPTOM
Headlamps flash randomly.
ACTION
² Test for poor circuit ground.
² Test for high resistance in headlamp circuits.
Ä LAMPS 8L - 1

² Test condition of headlamp relay.
² Check for loose or corroded connector terminals or
splices in headlamp circuits. Refer to Wiring Dia-
grams manual for component and splice locations.
SYMPTOM
Headlamps do not illuminate.
ACTION
² Test for voltage at headlamp bulbs connectors.
² Test headlamp relay.
² Test headlamp switch.
² Test high-beam headlamp dimmer switch.
² Check for loose or corroded connector terminals or
splices in headlamp circuits. Refer to Wiring Dia-
grams manual for component and splice locations.
FOG LAMP DIAGNOSIS
The fog lamp system receives voltage from the
headlamp relay when the low-beam headlamps are turned ON. The high-beam headlamp dimmer switch
when actuated cancels out voltage feed to the fog
lamp circuit. The fog lamp circuit is protected by a
20 amp fuse located in the fuse panel. Refer to Wir-
ing Diagrams manual for component location and cir-
cuit information.
SYMPTOM
Fog lamps do not illuminate.
ACTION
² Test fog lamp bulb.
² Test for voltage at fog lamp connector.
² Test for proper fog lamp ground.
² Test circuit fuse.
² Test fog lamp switch.
² Test high-beam headlamp dimmer switch.
² Test headlamp relay.
² Test for open circuit in wire harness.
8L - 2 LAMPS Ä

EXTERIOR LAMPSÐAA BODY INDEX
page page
Center High-Mounted Stop Lamp (CHMSL) Bulb . . 9
Fog Lamp ............................... 9
Fog Lamp Bulb ........................... 9
Front Side Marker Lamp or Bulb .............. 7
Headlamp Bulb ........................... 7 Headlamp Lens
........................... 7
License Plate Lamp or BulbÐAA/P Body ....... 8
License Plate LampsÐAA/C Body ............. 8
Park and Turn Signal Lamp or Bulb ........... 7
Tail, Stop and Turn Signal and Back-Up Lamp . . . 8
HEADLAMP BULB
REMOVAL (FIG. 1)
(1) Raise hood to the open position.
(2) Disconnect wire connector from lamp socket be-
hind the headlamp in the engine compartment. (3) Rotate bulb retaining ring counterclockwise
one quarter turn and remove the ring from the lamp. (4) Pull bulb from the lens assembly. When install-
ing bulb, align notches on bulb base to grooves in
lamp opening.
CAUTION: Do not touch the bulb with fingers or any
possibly oily surface, reduced bulb life will result.
INSTALLATION
Reverse the preceding operation.
HEADLAMP LENS
REMOVAL
(1) Raise hood to the open position.
(2) Disconnect wire connector from back of head-
lamp bulb. (3) Remove screws holding side marker lamp to
front fender. (4) Separate side marker lamp from fender and re-
move bulb socket from lamp. (5) Remove screws holding headlamp to radiator
closure panel. (6) Separate headlamp from radiator closure panel.
INSTALLATION
Reverse the preceding operation.
PARK AND TURN SIGNAL LAMP OR BULB
REMOVAL (FIG. 2)
(1) Remove screws holding park and turn signal
lamp to bumper fascia. (2) Separate lamp from bumper fascia.
(3) Remove socket from lamp.
(4) Pull bulb from socket.
INSTALLATION
Reverse the preceding operation.
FRONT SIDE MARKER LAMP OR BULB
REMOVAL (FIG. 3)
(1) Remove lamp assembly attaching screws and
separate the lamp from the front fender opening. (2) Rotate the side marker lamp socket counter-
clockwise one quarter turn and pull the socket and
bulb from the lamp. (3) Remove the bulb from the socket.
Fig. 1 Aero Headlamp
Fig. 2 Park and Turn Signal Lamp
Ä LAMPS 8L - 7

INSTALLATION
Reverse the preceding operation.
TAIL, STOP AND TURN SIGNAL AND BACK-UP
LAMP
REMOVAL (FIG. 4)
(1) Open deck lid and remove the plastic wing nut
securing the rear trim cover in place. (2) Pivot the end of the trim panel out of the way
to gain access, and remove wing-nuts holding the
lamp to the vehicle. (3) Separate the tail lamp from the body far
enough to rotate the socket and bulb assemblies. Ro-
tate sockets one-half turn and pull the sockets out of
the lamp body. (4) Remove the bulb from the socket.
INSTALLATION
Reverse the preceding operation.
LICENSE PLATE LAMPSÐAA/C Body
REMOVAL (FIG. 5)
(1) Remove screws holding license plate lamp to
rear bumper fascia. (2) Separate license plate lamp from fascia.
(3) Remove socket from license plate lamp.
(4) Pull bulb from socket if bulb replacement is re-
quired.
INSTALLATION
Reverse the preceding operation.
LICENSE PLATE LAMP OR BULBÐAA/P Body
REMOVAL (FIG. 6)
(1) Remove two lamp assembly attaching screws
above the rear license plate opening. (2) Remove the lens from the deck-lid.
(3) Pull the bulb from the socket.
INSTALLATION
Reverse the preceding operation.
Fig. 3 Front Side Marker Lamps
Fig. 4 Rear LightingÐAA/P or AA/D Body
Fig. 5 License Plate LampsÐAA/C Body
Fig. 6 License Plate LampÐAA/P Body
8L - 8 LAMPS Ä

CENTER HIGH-MOUNTED STOP LAMP (CHMSL)
BULB
REMOVAL (FIG. 7)
(1) Pull cover from lamp assembly.
(2) Rotate socket counterclockwise to remove
socket and bulb. (3) Remove bulb from socket.
INSTALLATION
Reverse the preceding operation.
FOG LAMP BULB
REMOVAL (FIG. 8)
(1) From behind front bumper fascia disengage fog
lamp wire connector from bulb base. (2) Rotate bulb base counterclockwise one half
turn and pull bulb from lamp. CAUTION: Do not touch bulb glass with fingers or
other possibly oily surface, reduced bulb life will re-
sult.
INSTALLATION
Reverse the preceding operation.
FOG LAMP
REMOVAL (FIG. 8)
(1) Disengage wire connector.
(2) Remove nut holding lamp mounting bracket.
(3) Pull the lamp assembly from opening in
bumper fascia.
INSTALLATION
Reverse the preceding operation. Refer to Fog
Lamp Adjustment Procedures in this group for align-
ment instructions.
Fig. 7 Center High-Mounted Stop Lamp
Fig. 8 Fog Lamp
Ä LAMPS 8L - 9

EXTERIOR LAMPSÐAC BODY INDEX
page page
Aero Headlamp Bulb ...................... 10
Aero Headlamp Housing ................... 11
Aero HeadlampsÐAC/D-Body ............... 10
Center High Mounted Stop Lamp (CHMSL) ..... 13
Center High-Mounted Stop Lamp (CHMSL) Bulb . 13
Cornering Lamp Assembly .................. 12
Cornering Lamp Bulb ..................... 12
Front Side Marker BulbÐAC/C-Body .......... 12
Front Side Marker LampÐAC/C-Body ......... 12
Headlamp Diagnosis ...................... 10 Headlamp Sealed BeamÐAC/C Body
......... 10
License Plate Lamp/Bulb ................... 13
Park/Turn Signal Lamp or BulbÐAC/C-Body .... 11
Park/Turn Signal Lamp or BulbÐAC/D-Body .... 11
Rear Side Marker Lamp BulbÐAC/C-Body ..... 13
Rear Side Marker LampÐAC/C-Body ......... 13
Tail, Stop, Turn Signal, Back-Up and Side Marker LampÐAC/D-Body ...................... 12
Tail, Stop, Turn Signal, Back-Up LampÐAC/C or AY/S-Body ............................ 12
HEADLAMP DIAGNOSIS
Refer to the Headlamp Diagnosis at the beginning of
this Group. Refer to Wiring Diagrams Manual for
circuit and component locations.
HEADLAMP SEALED BEAMÐAC/C BODY
REMOVAL
(1) Turn the headlight switch ON.
(2) Open the hood and locate the Power Distribution
Center forward of the left front suspension tower (Fig.
1). Remove the cover. (3) Remove the Headlamp Close Relay (Fig. 2) to
prevent the headlamp doors from closing. (4) Turn the headlight switch OFF.
(5) Remove screws from headlamp bezel and remove
bezel, if equipped. (6) Remove screws from interior retaining ring (Fig.
3), and remove ring. Do not disturb the headlamp adjusting screws.
(7) Pull out sealed beam unit and unplug connector.
INSTALLATION
Reverse the preceding operation.
AERO HEADLAMPSÐAC/D-BODY
Lens fogging is a normal condition and does
not require service, as moisture will vent from
tubes behind the lens.
AERO HEADLAMP BULB
REMOVAL (FIG. 4)
(1) Locate and remove the wire connector behind the
headlamp assembly in the engine compartment.
CAUTION: Do not touch the bulb with fingers or any
possibly oily surface, reduced bulb life will result. (2) Rotate the bulb retaining ring counterclockwise
one quarter turn and remove the ring, bulb and bulb
holder from the lens assembly. The bulb holder has
alignment notches.
INSTALLATION
Reverse the preceding operation.
Fig. 1 Power Distribution Center
Fig. 2 Headlamp Close Relay
8L - 10 LAMPS Ä

AERO HEADLAMP HOUSING
REMOVAL (FIG. 4 AND 5)
To remove the aero headlamp housing, perform
steps (1) and (2) of bulb removal operation and pro-
ceed with the following procedures. (1) The battery may have to be removed to replace
the left front headlamp bulb or lens. (2) From inside the engine compartment, unsnap
the headlamp adjuster cables from the headlamp ad-
juster screws. (3) Remove the four headlamp lens attaching nuts
from behind the grille opening panel, and remove the
lamp housing from the vehicle.
INSTALLATION
Reverse the preceding operation.
PARK/TURN SIGNAL LAMP OR BULBÐAC/D-BODY
REMOVAL (FIG. 6)
(1) Remove nut holding park turn signal lamp to
the GOP through an access hole in the radiator clo-
sure panel from behind the lamp. (2) Separate the park and turn signal lamp from
the GOP. (3) Remove the socket from the lamp
(4) Pull the bulb from the socket if bulb replace-
ment is required.
INSTALLATION
Reverse the preceding operation.
PARK/TURN SIGNAL LAMP OR BULBÐAC/C-BODY
REMOVAL (FIG. 7)
(1) Remove the two park and turn signal lamp at-
taching screws. (2) Separate the lamp from the front bumper fascia
and remove the bulb and socket assembly.
Fig. 3 Sealed Beam ReplacementÐTypical
Fig. 4 Aero HeadlampÐAC/D-Body
Fig. 5 Headlamp Adjuster CablesÐAC/D-Body
Fig. 6 Park, Turn Signal, Cornering and Side Marker LampsÐAC/D-Body
Ä LAMPS 8L - 11

INSTALLATION
Reverse the preceding operation.
FRONT SIDE MARKER BULBÐAC/C-BODY
REMOVAL (FIG. 7)
(1) Reach behind the front fender and rotate the
socket counterclockwise. Pull the socket from the
lamp body. (2) Remove the bulb from the socket.
INSTALLATION
Reverse the preceding operation.
FRONT SIDE MARKER LAMPÐAC/C-BODY
REMOVAL (FIG. 7)
(1) Remove the cornering lamp retaining nuts, and
remove cornering lamp. (2) Remove the four nuts retaining the bumper
trim moulding to the body. (3) Remove bumper trim moulding.
(4) Remove side marker lamp.
INSTALLATION
Reverse the preceding operation.
CORNERING LAMP BULB
REMOVAL (FIG. 6 OR 7)
(1) Reach behind the front fender and rotate the
socket assembly counterclockwise. (2) Pull the socket out of the lamp body.
(3) Remove the bulb from the socket.
INSTALLATION
Reverse the preceding operation.
CORNERING LAMP ASSEMBLY
REMOVAL (FIG. 6 OR 7)
(1) Remove the bulb and socket assembly from the
lamp body. (2) Remove nuts securing the lamp assembly to the
cornering lamp bezel. (3) Pull the lamp from the bezel.
INSTALLATION
Reverse the preceding operation.
TAIL, STOP, TURN SIGNAL, BACK-UP
LAMPÐAC/C OR AY/S-BODY
REMOVAL (FIG. 8)
(1) Open trunk lid.
(2) Remove screws holding tail lamp to quarter
panel extension. (3) Separate lamp from vehicle.
(4) Rotate the bulb sockets counterclockwise and
pull the sockets from the lamp. (5) Pull bulb from socket if bulb replacement is re-
quired.
INSTALLATION
Reverse the preceding operation.
TAIL, STOP, TURN SIGNAL, BACK-UP AND SIDE
MARKER LAMPÐAC/D-BODY
REMOVAL (FIG. 9)
(1) Raise deck lid and remove closure panel lower
trim cover. (2) Remove tail lamp attaching wing nuts from be-
hind the rear closure panel.
Fig. 7 Park, Turn Signal, Cornering, and Side Marker LampsÐAC/C or AY/C-S-Body
Fig. 8 Tail, Stop, Turn Signal, Back-Up, and SideMarker LampsÐAC/C or AY/C-S Body
8L - 12 LAMPS Ä

(3) Separate the lamp assembly from the rear clo-
sure panel. (4) Rotate the socket and bulb assemblies counter-
clockwise and pull the sockets from the lamp. (5) Remove the bulbs from the sockets.
INSTALLATION
Reverse the preceding operation.
REAR SIDE MARKER LAMP BULBÐAC/C-BODY
REMOVAL (FIG. 8)
(1) Raise the deck lid and roll the trunk liner
away from the inner quarter panel. (2) Rotate the socket and bulb assembly counter-
clockwise and pull the socket from the lamp. (3) Remove the bulb from the socket.
INSTALLATION
Reverse the preceding operation.
REAR SIDE MARKER LAMPÐAC/C-BODY
REMOVAL (FIG. 8)
(1) Remove the body side molding. Refer to Group
23, Body. (2) Remove socket assembly and attaching nuts
and separate lamp from the body.
INSTALLATION
Reverse the preceding operation.
LICENSE PLATE LAMP/BULB
REMOVAL
(1) Remove the two screws retaining the lamp to
the bumper guard. (2) Remove the bulb from the socket assembly.
INSTALLATION
Reverse the preceding operation.
CENTER HIGH-MOUNTED STOP LAMP (CHMSL)
BULB
REMOVAL
(1) Open trunk lid.
(2) From under the parcel shelf, rotate socket
counterclockwise, and pull the CHMSL socket and
bulb from the lamp. (3) Pull bulb from the socket.
INSTALLATION
Reverse the preceding operation.
CENTER HIGH MOUNTED STOP LAMP (CHMSL)
REMOVAL (FIG. 10)
(1) Remove parcel shelf trim cover. Refer to Group
23, Body. (2) Remove two CHMSL attaching screws and sep-
arate the lamp from the parcel shelf.
INSTALLATION
Reverse the preceding operation.
Fig. 9 Rear LightingÐAC/D-Body
Fig. 10 CHMSL
Ä LAMPS 8L - 13