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Vehicle Wiring Details for your
2003-2004 Porsche Boxster 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 Porsche Boxster . 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/WHITE (+)   IGNITION SWITCH HARNESS
 STARTER  YELLOW(+)  IGNITION SWITCH HARNESS
 STARTER 2  N/A  
 IGNITION 1  BLACK (+)  IGNITION SWITCH HARNESS
 IGNITION 2  ORANGE (+)  IGNITION SWITCH HARNESS
 IGNITION 3  N/A  
 ACCESSORY/HEATER BLOWER 1  BLACK/YELLOW (+)  IGNITION SWITCH HARNESS
 ACCESSORY/HEATER BLOWER 2  N/A  
 KEYSENSE  N/A  
 PARKING LIGHTS ( - )  N/A  
 PARKING LIGHTS ( + )  GRAY/RED (+) and GRAY/BLACK (+) use both, See NOTE *4  @ HEADLIGHT SWITCH, See DIAGRAM
 POWER LOCK  WHITE/BLACK (1-Wire System) See NOTE *1  @ ALARM/DOORLOCK MODULE, CONNECTOR A PIN 29 See NOTE *2
 POWER UNLOCK  Same wire, See DIAGRAM  See DIAGRAM
 DOOR TRIGGER  See NOTE *3  @ ALARM/DOORLOCK MODULE, CONNECTOR A PIN 25 AND 7, See NOTE *2
 DOMELIGHT SUPERVISION  BROWN/YELLOW (-)  @ ALARM/DOORLOCK MODULE, CONNECTOR B PIN 11, See NOTE *2
 TRUNK RELEASE  WHITE/GRAY (-)  @ ALARM/DOORLOCK MODULE, CONNECTOR A PIN 9, See NOTE *2
 SLIDING POWER DOOR  N/A  
 HORN  BROWN/WHITE (-)  @ HORN SWITCH
 TACH  PURPLE/GREEN  @ DIAGNOSTIC CONNECTOR, UNDER DRIVERS DASH
 WAIT TO START LIGHT  N/A  
 BRAKE  BLACK/YELLOW (+) or BLACK/ORANGE (+)  @ SWITCH ABOVE BRAKE PEDAL
 FACTORY ALARM DISARM   BROWN/RED (-)  @ ALARM/DOORLOCK MODULE, See NOTE *2
 ANTI-THEFT  PORSCHE'S TRANSPONDER SYSTEM, REQUIRES 791 BYPASS and EXTRA IGNITION KEY  TRANSPONDER @ IGNITION SWITCH TUMBLER
 EXTRA INFORMATION
 NOTE *1 THE LOCK IS (+) POSITIVE TRIGGER THRU AN 180 OHM RESISTOR. UNLOCK IS A STRIGHT (-) NEGATIVE TRIGGER, MUST USE RELAYS PART #775, TO CONNECT, See DIAGRAM. NOTE *2 THE ALARM/DOORLOCK MODULE IS LOCATED UNDER THE DRIVERS SEAT. NOTE *3 BROWN/GREEN WITH WHITE DOTS(-) FOR THE DRIVERS SIDE AND BROWN/GREEN(-) FOR PASSENGER SIDE. WHEN CONNECTING TO AN ALARM SYSTEM USE BOTH DOOR TRIGGER WIRES AND DIODE ISOLATE, TO CONNECT, SEE DIAGRAM. NOTE *4 this vehicle uses a 2-Wire PARKING LIGHT Circuit and will require (2) extra Relays Part #775 to connect, See DIAGRAM.
 
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