Metra Electronics LEXUS 99-8156 User manual

INSTALLATION INSTRUCTIONS FOR PART 99-8156
APPLICATIONS
LEXUS LS SERIES
1990-1994
KIT FEATURES
•DIN Mount Radio Provision with Pocket
•ISO Mount Radio Provision with Pocket
A) Radio Housing • B) ISO Brackets • C) Radio Housing Brackets • D) Trim Plate
E) (6) #8 Phillips Screws
KIT COMPONENTS
A
B
TOOLS REQUIRED:
Small Flat Blade Screwdriver/ Panel Removal Tool
•Phillips Screwdriver • Socket Set
1-800-221-0932
©COPYRIGHT 2007 METRA ELECTRONICS CORPORATION
www.metraonline.com
99-8156
C
DE

Dash Disassembly
- Lexus LS Series 1990-1994 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Kit Preparation ...........................................2
Kit Assembly
- DIN Mount Radio Provision with Pocket . . . . . . . . . . . . . . . . . . . . . . . . 3
-ISO Mount Radio Provision with Pocket ....................... 4
Final Assembly ...........................................5
TABLE OF CONTENTS
99-8156
*Note:
Refer also to the instructions included with the aftermarket radio.

99-8156 DASH DISASSEMBLY
LEXUS LS SERIES 1990-1994
1
Disconnect the negative battery ter-
minal to prevent an accidental short
circuit.
1
Carefully pry out and remove ashtray
assembly below radio. ( Figure A)
2
Using a panel removal tool or small
flat blade screwdriver gently pry out
on the top of the A/C vent assembly
and remove. (Figure B)
3
Remove (4) screws securing the fac-
tory radio/climate control assembly.
Unplug and remove assembly.
(Figure C)
4
Remove (4) screws securing the cli-
mate controls to the assembly and
remove the climate controls from the
assembly. (Retain the screws and cli-
mate controls for re-use during kit
assembly).
5
Continue to kit preparation.
A
B
C

99-8156 KIT PREPARATION
2
Attach the corresponding radio hous-
ing bracket to the radio housing using
the included Phillips screws.
(Figure A)
1
Slide the factory climate control into
the assembled radio housing brack-
ets/radio housing assembly and
securewith the factory hardware.
(Figure B)
2
Continue to kit assembly.
A
B
LEXUS LS SERIES 1990-1994
DIN MOUNT RADIO PROVISION WITH POCKET
ISO MOUNT RADIO PROVISION WITH POCKET
Note: Refer also to the instructions included with the aftermarket radio.

99-8156 KIT ASSEMBLY
3
Slide the DIN cage into the Radio
Housing and secure by bending the
metal locking tabs down. (Figure A)
1
Slide the aftermarket radio into the
cage until it snaps in place.
(Figure B)
2
Continue to final assembly.
A
B
LEXUS LS SERIES 1990-1994
DIN MOUNT RADIO PROVISION WITH POCKET
Note: Refer also to the instructions included with the aftermarket radio.

99-8156 KIT ASSEMBLY
4
Mount the ISO Brackets to the radio
using the screws supplied with the
radio.
(Figure A)
1
Snap the Trim plate onto the front of
the Radio Housing. (Figure B)
3
Slide the radio into the radio housing
until the side clips engage.
(Figure B)
2
Continue to final assembly.
A
B
LEXUS LS SERIES 1990-1994
ISO MOUNT RADIO PROVISION WITH POCKET
Note: Refer also to the instructions included with the aftermarket radio.

99-8156 FINAL ASSEMBLY
FINAL ASSEMBLY
(A) Strip wire ends back 1/2"
B) Twist ends together
C) Solder
D) Tape
A
B
C
D
Locate the factory wiring harness in the dash. Metra recommends using the
proper mating adapter and making connections as shown. (Isolate and individ-
ually tape off the ends of any unused wires to prevent electrical short circuit.)
Re-connect the negative battery terminal and test the unit for proper operation.
Reassemble radio and dash assemblies in reverse order of disassembly.
1
2
3
FINAL WIRING CONNECTIONS
Make wiring connections using the EIA color code chart shown belowand the instructions included with the
head unit. Metra recommends making connections as shown below; Strip, Splice, Solder, Tape. Isolate and
individually tape off ends of any unused wires to prevent electrical short circuit.
METRA / EIA WIRING CODE
12V Ignition / Acc..........Red
12V Batt / Memory. . . . . . . . . Yellow
Ground. . . . . . . . . . . . . . . . . . Black*
Power Antenna. . . . . . . . . . . . Blue
Amp Turn-On . . . . . . . . . . . . . Blue / White
Amp Ground. . . . . . . . . . . . . . Black / White
Illumination . . . . . . . . . . . . . . Orange
Dimmer . . . . . . . . . . . . . . . . . Orange / White
Right Front (+) . . . . . . . . . . . . Gray
Right Front (-). . . . . . . . . . . . . Gray/ Black
Left Front (+) . . . . . . . . . . . . . White
Left Front (-). . . . . . . . . . . . . . White / Black
Right Rear (+) . . . . . . . . . . . . Violet
Right Rear (-) . . . . . . . . . . . . . Violet / Black
Left Rear (+) . . . . . . . . . . . . . Green
Left Rear (-) . . . . . . . . . . . . . . Green / Black
*NOTE: When a Black wire is not present, ground radio to vehicle chassis.
All colors may not be present on all leads due to manufacturer’s specifications.
5

99-8156 INSTRUCTIONS
1-800-221-0932
REV. 12/05/07 © COPYRIGHT 2007 METRA ELECTRONICS CORPORATION INST99-8156
www.metraonline.com