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LEXUS IS300
MODEL YEAR(S
IS300 2004-2005
KEY T-HARNESS IMMOBILIZER
N/A N/A LEXUS TRANSPONDER ANTI-THEFT SYSTEM, See NOTE #5
PART COLOR LOCATION DIAGRAM
12 VOLT CONSTANT WHITE (+) and WHITE/RED (+) @ IGNITION SWITCH HARNESS
STARTER BLACK/WHITE (+) @ IGNITION SWITCH HARNESS
STARTER 2 N/A
IGNITION 1 BLACK/RED (+) @ IGNITION SWITCH HARNESS
IGNITION 2 BLUE/RED (+) @ IGNITION SWITCH HARNESS
IGNITION 3 N/A
ACCESSORY/HEATER BLOWER 1 RED (+) @ IGNITION SWITCH HARNESS
ACCESSORY/HEATER BLOWER 2 N/A
KEYSENSE BLACK/YELLOW (-) @ IGNITION SWITCH HARNESS
PARKING LIGHTS ( - ) RED (-) @ HEADLIGHT SWITCH
PARKING LIGHTS ( + ) GREEN/BLACK (+) RIGHT side of DRIVERS FUSEBOX, 13-Pin Plug
POWER LOCK See NOTE #1 See DIAGRAM 26500_IS300_TOYOTA and LEXUS door lock interface.pdf
POWER UNLOCK See NOTE #1 See DIAGRAM
LOCK MOTOR WIRE GREEN/YELLOW (5-WIRE TYPE) @ LEFT side of DRIVERS FUSEBOX, 12-Pin Plug
DOOR TRIGGER See NOTE #2 @ BODY ECU, See NOTE #4
DOMELIGHT SUPERVISION RED/WHITE (-) @ 8 PIN PLUG RIGHT SIDE OF DRIVERS FUSEBOX
TRUNK RELEASE BLUE/WHITE (5 WIRE) See NOTE #4 @ BODY ECU, TOP OF FUSEBOX 14301_IS300_5-WIRE TRUNK RELEASE DIAGRAM.pdf
SLIDING POWER DOOR N/A
HORN GREEN/WHITE (-) @ HORN SWITCH in Column Cover.
TACH BLACK DATA LINK CONNECTOR UNDER DRIVERS DASH
WAIT TO START LIGHT N/A
BRAKE GREEN/WHITE (+) @ SWITCH ABOVE BRAKE PEDAL
FACTORY ALARM DISARM DISARMS with KEYSENSE wire, See NOTE *2 @ IGNITION SWITCH HARNESS
ANTI-THEFT LEXUS TRANSPONDER ANTI-THEFT SYSTEM, See NOTE #5 TRANSPONDER @ IGNITION SWITCH TUMBLER
NOTES
NOTE #1: THIS VEHICLE'S DOORLOCKS ARE SPECIAL AND WILL REQUIRE AN EXTRA RELAY, PART #775 AND 2 DIODES, TO CONNECT, See DIAGRAM







NOTE #2: THE DRIVERS DOOR TRIGGER IS RED/GREEN (-),THE FRONT PASSENGER DOOR IS RED/BLACK(-),THE REAR DOORS IS RED/BLUE (-). WHEN CONNECTING AN ALARM SYSTEM USE ALL 3 DOOR TRIGGER WIRES AND DIODE ISOLATE. TO CONNECT, SEE DIAGRAM







NOTE #3: the vehicle can be disarmed without unlocking by attaching a (-) Negative output wire to the BLACK/YELLOW (-) KEYSENSE wire in the IGNITION SWITCH HARNESS.







NOTE #4: THE TRUNK/HATCH RELEASE ON THIS VEHICLE WILL REQUIRE AN EXTRA RELAY PART #775 FOR THE 5-WIRE SYSTEM, TO CONNECT, See DIAGRAM







NOTE #5: TOYOTA'S TRANSPONDER ANTI-THEFT SYSTEM, Requires part #791 Bypass Module and

an extra ignition key for remote starting.



Part # PK-ALL Bypass, NO EXTRA KEY REQUIRED!!



To order go to the INTERFACE Bypass Module Page on this website.



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