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Vehicle Wiring Details for your
2004-2006 Bmw X3 Wiring Diagram
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Listed below is the vehicle specific wiring diagram for your car alarm, remote starter or keyless entry installation into your 2004-2006 Bmw X3 . This information outlines the wires location, color and polarity to help you identify the proper connection spots in the vehicle. Please be sure to test all of your wires with a digital multimeter before making any connections. More information on using a multimeter and testing wires please see our Technical Support Area.


 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 ( + )  GRAY/PURLPE(+)(LEFT) and GRAY/YELLOW(+) (RIGHT) USE BOTH and ISOLATE with a RELAY  @ LIGHT SWITCH MODULE, 54-PIN PLUG, PINS 30 and 29
 POWER LOCK  YELLOW/RED (TYPE B)  @ CENTRAL LOCKING SWITCH or 54-PIN PLUG, PIN 7 @ GMCU Module, See NOTE #3
 POWER UNLOCK  Use LOCK wire  
 DOOR TRIGGER  GRAY/BROWN/YELLOW (-)  54-PIN PLUG, PIN 26 @ GMCU Module, See NOTE #3
 DOMELIGHT SUPERVISION  RED/BLUE (+)  54-PIN PLUG, PIN 18 @ GMCU Module, See NOTE #3
 TRUNK RELEASE  GRAY/RED(-) or GRAY/YELLOW (-)  54-PIN PLUG, PIN 44 @ GMCU Module, See NOTE #3
 SLIDING POWER DOOR  N/A  
 HORN  PURPLE/BLUE (+)  @ HORN RELAY, behind GLOVEBOX @ FUSEBOX
 TACH  BLACK (AC)  @ DATA LINK CONNECTOR, 16-PIN PLUG, PIN 9
 WAIT TO START LIGHT  N/A  
 BRAKE  BROWN/GRAY (+) (TEST with Ignition ON)  @ BRAKE PEDAL SWITCH
 FACTORY ALARM DISARM   WHITE/BLACK (-) (test with key in door)  54-PIN PLUG, PIN 20 @ GMCU Module, See NOTE #3
 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 Power up before Ignition #1, use the (-) Ignition #3 output and a relay NOTE #3: The GMCU Module is located behind the GLOVEBOX.
 
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