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S3TA03
S3-1 INTERFACE HARNESS
FOR 2003-11 TOYOTA JBL /
LEXUS PREMIUM AUDIO
SYSTEMS
APPLICATIONS
LEXUS Premium Sound
(Not compatible with Mark Levinson)
2008-10 ES330/350
2007-08 GS350
2008 GX470
2007-10 RX350
TOYOTA JBL & JBL Synthesis
2003-10 4Runner
2007-09 Avalon
2007-11 Camry
2008-11 Highlander
2004-11 Prius
2004-11 RAV4
2005-11 Sequoia
2004-11 Sienna
2006-08 Solara
2005-11 Tacoma
2004 Tundra W/RSE 8-speaker
JBL system only
2005-06 Tundra W/JBL Except
6 Speaker system
2007-11 Tundra
INSTALLATION NOTES
This S3TA03 harness is designed for use with the
Scosche S3-1 interface. It allows you to replace your
Factory OEM stereo while retaining the Factory Digital
JBL/Premium audio system and Steering wheel controls
wjem vehicle is so equipped. Please review this information for specific installation in selected Toyota and Lexus
vehicles. For steering wheel control information, consult
the S3-1 interface instructions.
JBL / JBL SYNTHESIS and LEXUS AMPLIFIED
AUDIO SYSTEMS
These Factory-amplified sound systems are driven and
digitally controlled by a single set of Left/Right input
channels only. The Aftermarket radio does not have the
ability to control Front to Rear fade adjustment. The
fader will be set to center by the interface software.
FACTORY AUX-INPUT RETENTION
The S3TA03
(White/Red) input connections for retaining the Factory
Auxiliary input location on some 2005-UP vehicles. If
your Aftermarket stereo has a set of rear Auxiliary input
connection, then use these plugs to retain the use of the
original Factory Aux-in location.
harness includes a set of Left/Right
WIRING INSTRUCTIONS
1. Disconnect the Negative battery cable from the
battery to avoid short circuits.
2. Remove and unplug Factory stereo. (If needed, call
Scosche Toll-free Tech for assistance with radio
removal: (800) 621-3695 Ext. 3)
3. Match and connect the Power/ground wires from
the S3-1 Vehicle specific harness to the wires from
your stereo. The color codes on the Scosche
harness are designed to match most Aftermarket
stereos.
4. Wire the Front RCA leads from the RCA audio input
connections on the harness. Gray RCA is Right input
and White RCA is Left input (Diagram on
reverse).
4A. Optional: If you are using the Aux input RCA leads
to retain the Factory Aux input location, connect
the Red/White audio cables from the S3-1 harness
to the Auxiliary input at the back of the Radio
(Diagram on reverse).
5. Tape any unused wiring to prevent short circuits.
6. Connect all harnesses between S3-1, Vehicle and
Aftermarket stereo.
TECH
SUPPORT
If you have any questions or need Technical
Assistance with the installation, or the most
!
current applications, please call (800)
621-3695 Ext. 3
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S3TA03
S3-1 INTERFACE HARNESS
FOR 2003-11 TOYOTA JBL /
LEXUS PREMIUM AUDIO
SYSTEMS
S3TA03 WIRING DIAGRAM
WIRE COLOR CODES
White RCA = Left Channel Audio input Orange = Illumination
Gray RCA = Right Channel Audio input Orange/White = Dimmer
Black = Chassis Ground Blue = +12V Power Antenna/
Yellow = +12V Constant Power (Amplified antenna)
Red = +12V Accessory / R.A.P output Blue/White = +12 Remote Output
White RCA = Left Aux input (from Factory Auxiliary connection)
Red RCA = Left Aux input (from Factory Auxiliary connection)
S3-1/S3TA03B
*Optional:
Factory AUX-input
retention plug. Use
these if Aftermarket
stereo has rear AUX
input connection.
Keeps Factory
Aux-input location
AFTERMARKET
STEREO
AUX*
USE 2-CH
RCA
Gray: Right
White: Left
(No fade)
S3TA03 Harness
3.5mm steering wheel output
(Alpine, Clarion, JVC, Pioneer, Sony)
Blue steering wheel
output (Kenwood)
TECH
SUPPORT
If you have any questions or need Technical
Assistance with the installation, or the most
!
current applications, please call (800)
621-3695 Ext. 3
To vehicle
To vehicle
S3-1 Steering
Wheel module
S3-1 inteface module
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