Lexus  IS300 2001-2003
 PART   COLOR  LOCATION
 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 (+)  IN DRIVERS KICK PANEL, HARNESS to REAR of VEHICLE
 POWER LOCK  See NOTE #1  See DIAGRAM
 POWER UNLOCK  See NOTE #1  See DIAGRAM
 DOOR TRIGGER  See NOTE #2  @ BODY ECU, See NOTE #4
 DOMELIGHT SUPERVISION  RED/GREEN (-)  @ BODY ECU, See NOTE #4
 TRUNK RELEASE  BLUE/WHITE (5 WIRE) See NOTE #5  @ BODY ECU, See NOTE #4
 SLIDING POWER DOOR  N/A  
 HORN  GREEN/WHITE (-)  @ STEERING COLUMN HARNESS
 TACH  BLACK  @ IGNITER, See NOTE #3
 WAIT TO START LIGHT  N/A  
 BRAKE  GREEN/WHITE (+)  @ SWITCH ABOVE BRAKE PEDAL
 FACTORY ALARM DISARM   Disarms with KEYSENSE Wire  @ IGNITION SWITCH HARNESS
 ANTI-THEFT  TRANSPONDER ANTI-THEFT SYSTEM, REQUIRES 791 BYPASS MODULE AND EXTRA IGNITION KEY  TRANSPONDER @ IGNITION SWITCH TUMBLER
 EXTRA INFORMATION
 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 (-),REAR DOOR ARE RED/WHITE (-). WHEN CONNECTING TO AN ALARM SYSTEM,USE ALL 3 DOOR TRIGGER WIRES AND DIODE ISOLATE. TO CONNECT, See DIAGRAM NOTE #3: THE IGNITOR IS ON THE DRIVERS SIDE STRUT TOWER. NOTE #4: THE BODY ECU (ELECTRONIC CONTROL UNIT) IS ATTACHED TO THE TOP OF THE FUSEBOX. NOTE #5: THE TRUNK/HATCH RELEASE ON THIS VEHICLE WILL REQUIRE AN EXTRA RELAY PART #775 FOR THE 5-WIRE SYSTEM, TO CONNECT, See DIAGRAM