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Vehicle Wiring Details for your
2003-2004 Bmw Z4 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 2003-2004 Bmw Z4 . 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/GREEN (+)   @ IGNITION SWITCH HARNESS
 STARTER  BLACK/BLUE (+)  @ IGNITION SWITCH HARNESS
 STARTER 2  N/A  
 IGNITION 1  GREEN (+)  @ IGNITION SWITCH HARNESS
 IGNITION 2  PURPLE (+)  @ IGNITION SWITCH HARNESS
 IGNITION 3  N/A  
 ACCESSORY/HEATER BLOWER 1  N/A  
 ACCESSORY/HEATER BLOWER 2  N/A  
 KEYSENSE  N/A  
 PARKING LIGHTS ( - )  N/A  
 PARKING LIGHTS ( + )  See NOTE #1  See DIAGRAM
 POWER LOCK  BLUE/RED (TYPE B)  @ GENERAL MODULE, See NOTE #2
 POWER UNLOCK  WHITE (TYPE B)  @ GENERAL MODULE, See NOTE #2
 DOOR TRIGGER  BROWN/GRAY (-)  @ GENERAL MODULE, See NOTE #2
 DOMELIGHT SUPERVISION  RED/BLUE (+)  @ GENERAL MODULE, See NOTE #2
 TRUNK RELEASE  GRAY/BROWN (-)  @ GENERAL MODULE, See NOTE #2
 SLIDING POWER DOOR  N/A  
 HORN  N/A  
 TACH  BLACK (AC)  @ ABD II CONNECTOER, under Dash
 WAIT TO START LIGHT  N/A  
 BRAKE  BROWN/GRAY (+) (TEST with Ignition ON)  @ BRAKE PEDAL SWITCH
 FACTORY ALARM DISARM   WHITE/BLACK (-)  @ GENERAL MODULE, See NOTE #2
 ANTI-THEFT  BMW'S TRANSPONDER ANTI-THEFT SYSTEM, See NOTE #3  @ IGNITION SWITCH TUMBLER
 EXTRA INFORMATION
 NOTE #1: the PARKING LIGHTS on this vehicle are Special and require an extra Relay part #775 to connect, See DIAGRAM NOTE #2: at the GENERAL MODULE located behind the GLOVE BOX, MIDDLE Plug NOTE #3: 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.
 
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