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LEXUS GS300
MODEL YEAR(S
GS300 2004-2005
KEY T-HARNESS IMMOBILIZER
N/A N/A LEXUS TRANSPONDER ANTI-THEFT SYSTEM, See NOTE #1
PART COLOR LOCATION DIAGRAM
12 VOLT CONSTANT WHITE/BLUE (+) @ IGNITION SWITCH HARNESS
STARTER BLACK (+) @ IGNITION SWITCH HARNESS
STARTER 2 N/A
IGNITION 1 BLACK/WHITE (+) @ IGNITION SWITCH HARNESS
IGNITION 2 BLACK/YELLOW (+) @ IGNITION SWITCH HARNESS
IGNITION 3 N/A
ACCESSORY/HEATER BLOWER 1 BLUE/YELLOW (+) @ IGNITION SWITCH HARNESS
ACCESSORY/HEATER BLOWER 2 N/A
KEYSENSE YELLOW (-) @ IGNITION SWITCH HARNESS
PARKING LIGHTS ( - ) RED/YELLOW (-) @ HEADLIGHT SWITCH
PARKING LIGHTS ( + ) GREEN (+) @ 11 PIN PLUG, BOTTOM OF FUSEBOX
POWER LOCK See NOTE #2 See DIAGRAM 6460_GS300_TOYOTA and LEXUS door lock interface.pdf
POWER UNLOCK See NOTE #2 See DIAGRAM
LOCK MOTOR WIRE GREEN/RED (5-WIRE TYPE) @ DRIVERS DOOR MODULE, in DRIVERS DOOR
DOOR TRIGGER See NOTE #3 @ DOOR MODULE, IN EACH DOOR 26500_GS300_(-) NEGATIVE DOOR PIN ISOLATION CIRCUIT.pdf
DOMELIGHT SUPERVISION GREEN (-) See NOTE #4 @ PIN 13, BECU #2, See NOTE #4
TRUNK RELEASE PURPLE/YELLOW (-), Requires Part #775 Relay @ TRUNK RELEASE SWITCH
SLIDING POWER DOOR N/A
HORN GREEN/BLACK (-) @ STEERING COLUMN HARNESS
TACH BLACK/YELLOW (AC) @ INSTRUMENT CLUSTER
WAIT TO START LIGHT N/A
BRAKE GREEN/WHITE (+) @ SWITCH ABOVE BRAKE PEDAL
FACTORY ALARM DISARM DISARMS with KEYSENSE wire, See NOTE #5
ANTI-THEFT LEXUS TRANSPONDER ANTI-THEFT SYSTEM, See NOTE #1 TRANSPONDER @ IGNITION SWITCH TUMBLER
NOTES
NOTE #1: LEXUS TRANSPONDER ANTI-THEFT SYSTEM, Requires Bypass Module,

Part # 791 Bypass Module (for REMOTE STARTING ONLY!) an Extra Ignition key is

required to be placed inside this module for Operation.



Part # PK-ALL Bypass Module (for REMOTE STARTING ONLY!) KEYLESS BYPASS

NO KEY is required for Operation.



To order the Bypass Module go to the INTERFACE BYPASS MODULE Page on this

website







NOTE #2: THIS VEHICLE'S DOORLOCKS ARE SPECIAL AND WILL REQUIRE AN EXTRA RELAY, PART #775 AND 2 DIODES, TO CONNECT, See DIAGRAM





NOTE #3: THE LEFT FRONT DOOR TRIGGER IS RED/GREEN (-),THE RIGHT FRONT IS RED/GREEN (-),THE LEFT REAR DOOR IS RED/WHITE (-), AND THE RIGHT REAR DOOR IS RED/YELLOW (-).USE ALL 4 DOOR TRIGGER WIRES AND DIODE ISOLATE, TO CONNECT, See DIAGRAM





NOTE #4: THE BECU #2, IS ATTACHED TO THE BACK OF THE FUSEBOX IN THE DRIVERS KICK PANEL.





NOTE #5: the vehicle can be disarmed without unlocking by attaching a (-) Negative output wire to the BLUE (-) KEYSENSE wire in the IGNITION SWITCH HARNESS.
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