Gmc  Yukon Xl 2003-2006
 PART   COLOR  LOCATION
 12 VOLT CONSTANT   RED (+)   @ IGNITION SWITCH HARNESS
 STARTER  YELLOW (+)  @ IGNITION SWITCH HARNESS
 STARTER 2  N/A  
 IGNITION 1  PINK (+)  @ IGNITION SWITCH HARNESS
 IGNITION 2  WHITE (+), See NOTE #5  @ IGNITION SWITCH HARNESS
 IGNITION 3  N/A  
 ACCESSORY/HEATER BLOWER 1  ORANGE (+)  @ IGNITION SWITCH HARNESS
 ACCESSORY/HEATER BLOWER 2  N/A  
 KEYSENSE  LIGHT GREEN (-)  @ IGNITION SWITCH HARNESS
 PARKING LIGHTS ( - )  GRAY/BLACK (-)  @ HEADLIGHT SWITCH or BCM, BROWN Plug, Pin B2, See NOTE #2
 PARKING LIGHTS ( + )  BROWN (+)  IN DRIVERS KICK PANEL
 POWER LOCK  See NOTE #1  
 POWER UNLOCK  See NOTE #1  
 DOOR TRIGGER  See NOTE #3  
 DOMELIGHT SUPERVISION  GRAY/BLACK (-)  @ BCM, BLACK Plug, Pin E, See NOTE #2
 TRUNK RELEASE  N/A  
 SLIDING POWER DOOR  N/A  
 HORN  BLACK (-)   @ BCM, GRAY Plug, Pin B9, See NOTE #2
 TACH  WHITE (AC)  @ PCM, GREEN plug, Pin 10, See NOTE #4
 WAIT TO START LIGHT  N/A  
 BRAKE  WHITE (+)  @ SWITCH ABOVE BRAKE PEDAL
 FACTORY ALARM DISARM   LIGHT GREEN (-)  in DRIVERS DOOR MODULE in DRIVERS DOOR
 ANTI-THEFT  YELLOW (+), BLACK (-) and RED/WHITE (Not Used)  GM's PASSLOCK 2 System, these wires exit the Ignition Switch Tumbler together and are in the Main Ignition Switch Harness in the Column.
 EXTRA INFORMATION
 NOTE #1: This vehicle requires an Interface Module Part# XK09 or GMDL-BP to connect the keyless entry AND bypass the PASSLOCK 2 System. If NOT installing keyless entry use the 791 bypass module instead. To order go to the security/interface bypass module page on this website. NOTE #2; The BCM (Body Control Module) is located behind the drivers side of the dash, with the plugs facing the rear of the vehicle. NOTE #3: This vehicle use (2) door pin triggers, the DRIVERS DOOR is a GREY/BLACK (-) at the DRIVERS DOOR module in the DRIVERS DOOR. The PASSENGER DOOR is a BLACK/WHITE (-) at the PASSENGERS DOOR module in the PASSENGERS DOOR. The DRIVERS REAR DOOR is a LIGHT BLUE/BLACK (-) Pin A3 and the PASSENGERS REAR DOOR is a LIGHT GREEN/BLACK (-) Pin A2, both are located at the BCM, PURPLE plug. When connecting to an ALARM SYSTEM, use all 4 Door Trigger wires and DIODE ISOLATE, to connect, See DIAGRAM NOTE #4: The PCM (Power Control Module) is located in the LEFT front of the engine compartment to the LEFT of the fan shroud. The TACH wire is in a GREEN Plug Pin 10. NOTE #5: IMPORTANT !!!!! this wire MUST BE CONNECTED as IGNITION #2 for REMOTE STARTING!!!!!!