Bmw  X3 2007-2009
 PART   COLOR  LOCATION
 12 VOLT CONSTANT   RED/BLUE (+)   @ IGNITION SWITCH, (11-PIN PLUG), PIN 5
 STARTER  BLACK/BLUE (+)  @ IGNITION SWITCH, (11-PIN PLUG), PIN 8
 STARTER 2  N/A  
 IGNITION 1  GREEN (+)  @ IGNITION SWITCH, (11-PIN PLUG), PIN 9
 IGNITION 2  PURPLE (+), See NOTE #2  @ IGNITION SWITCH, (11-PIN PLUG), PIN 2
 IGNITION 3  RED/BLACK or RED/BLUE (+)  @ IGNITION SWITCH, (11-PIN PLUG), PIN 10
 ACCESSORY/HEATER BLOWER 1  N/A  
 ACCESSORY/HEATER BLOWER 2  N/A  
 KEYSENSE  N/A  
 PARKING LIGHTS ( - )  N/A  
 PARKING LIGHTS ( + )  BLACK/GREEN(+)(Left Front) and BLACK/BLUE(+)(Right Front) use both, See NOTE #4  @ LIGHT MODULE, (76-PIN PLUG), PINS 49 and 3, NOTE #3
 POWER LOCK  YELLOW/RED (TYPE B)  @ CENTRAL LOCKING Switch or GMCU, (54-PIN PLUG), PIN 7, NOTE #5
 POWER UNLOCK  Use LOCK wire  
 DOOR TRIGGER  BROWN/GRAY/YELLOW (-)  @ GMCU, (54-PIN PLUG), PIN 26, NOTE #5
 DOMELIGHT SUPERVISION  RED/BLUE (-)  @ GMCU, (54-PIN PLUG), PIN 18, NOTE #5
 TRUNK RELEASE  GRAY/RED or GRAY/YELLOW (-), NOTE #5  @ GMCU, (54-PIN PLUG), PIN 44, NOTE #5
 SLIDING POWER DOOR  N/A  
 HORN  PURPLE/BLUE (+)  @ HORN RELAY behind FUSE BOX, behind GLOVE BOX
 TACH  BLACK (AC)  @ DATA LINK Connector, (PIN 9), Under DRIVERS DASH
 WAIT TO START LIGHT  N/A  
 BRAKE  BROWN/GRAY or BLUE/RED (+)  @ BRAKE PEDAL Switch or LIGHT MODULE, (76-PIN PLUG), PIN 51, NOTE #3
 FACTORY ALARM DISARM   WHITE/BLACK (-), NOTE #7  @ GMCU, (54-PIN PLUG), PIN 20, NOTE #5
 ANTI-THEFT  BMW'S TRANSPONDER ANTI-THEFT SYSTEM, See NOTE #1  @ IGNITION SWITCH TUMBLER
 EXTRA INFORMATION
 NOTE #1: BMW'S TRANSPONDER ANTI-THEFT SYSTEM, Requires Bypass Module, Part # 791 Bypass and an extra ignition key for REMOTE STARTING Operation. To order go to the SECURITY BYPASS MODULE Page on the website. NOTE #2: This wire MUST be POWERED UP before IGNITION #1. NOTE #3: the LIGHT MODULE is located under the DRIVERS DASH. NOTE #4: the LEFT REAR Parking Light wire is a GRAY/PURPLE(+), at the LIGHT MODULE, (76-PIN PLUG) PIN 64 and the RIGHT REAR Parking Light is a GRAY/YELLOW(+) at the LIGHT MODULE, (76-PIN PLUG) PIN 10, use ALL wires and Relay Isolate. NOTE #5: the GMCU, (General Module Control Unit) is located behind the GLOVE BOX. NOTE #6: TEST this wire while Opening the LIFTGATE from the Handle on the REAR of the Vehicle NOTE #7: TEST this wire while Turning the KEY in the DRIVERS DOOR.