Buick  Regal 2003-2004
 PART   COLOR  LOCATION
 12 VOLT CONSTANT   RED (+)   @ NITION SWITCH HARNESS
 STARTER  YELLOW (+)  @ NITION SWITCH HARNESS
 STARTER 2  N/A  
 IGNITION 1  PINK (+)  @ IGNITION SWITCH HARNESS
 IGNITION 2  WHITE to DARK GREEN (+)  @ IGNITION SWITCH HARNESS
 IGNITION 3  N/A  
 ACCESSORY/HEATER BLOWER 1  ORANGE (+)  @ IGNITION SWITCH HARNESS
 ACCESSORY/HEATER BLOWER 2  N/A  
 KEYSENSE  N/A  
 PARKING LIGHTS ( - )  GREY/BLACK (-)  @ BCM, LIGHT BLUE Plug, Pin A4, See NOTE #3
 PARKING LIGHTS ( + )  LIGHT BLUE (+), See NOTE #2  @ HEADLIGHT SWITCH
 POWER LOCK  RED/BLACK (TYPE B)  @ BCM, PURPLE Plug, Pin B6, See NOTE #3
 POWER UNLOCK  ORANGE/BLACK (TYPE B)  @ BCM, PURPLE Plug, Pin A6, See NOTE #3
 DOOR TRIGGER  DARK BLUE/WHITE (-)  @ BCM, PURPLE Plug, Pin A5, See NOTE #3
 DOMELIGHT SUPERVISION  USE DOOR TRIGGER  
 TRUNK RELEASE  WHITE (-)  @ BCM, PURPLE Plug, Pin A5, See NOTE #3
 SLIDING POWER DOOR  N/A  
 HORN  BLACK (-)  @ BCM, LIGHT BLUE Plug, Pin A5, See NOTE #3
 TACH  PURPLE/WHITE or WHITE (AC)  @ IGNITION CONTROL MODULE
 WAIT TO START LIGHT  N/A  
 BRAKE  WHITE (+)  @ SWITCH ABOVE BRAKE PEDAL
 FACTORY ALARM DISARM   N/A  
 ANTI-THEFT  2 WHITE wires or 1 WHITE and 1 PURPLE or PURPLE/WHITE in an ORANGE or BLACK TUBE in RUNNING DOWN STEERING COLUMN  GM's VATS System @ Ignition Switch
 EXTRA INFORMATION
 NOTE #1: If vehicle is equipped with PASSKEY/VATS, Ignition Key will have a little Chip on the Steel Shaft of the Key that can be seen. Requires 791 Bypass Module for Remote starting to order go to the SECURITY BYPASS MODULE Page on this website. NOTE #2: Use the LARGEST of the LIGHT BLUE at the HEADLIGHT SWITCH for PARKING LIGHTS, also this wire is a BROWN/WHITE (+) in the PASSENGER KICK PANEL in the harness to the rear of the vehicle. NOTE #3; the BCM is located to the LEFT of the STEERING COLUMN.