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Vehicle Wiring Details for your
2002-2004 Audi A4 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 2002-2004 Audi A4 . 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 (+)   @ IGNITION SWITCH HARNESS
 STARTER  RED/BLACK (+), See NOTE #1  @ IGNITION SWITCH HARNESS
 STARTER 2  BLUE or RED/BLACK (+), See NOTE #1  @ IGNITION SWITCH HARNESS
 IGNITION 1  BLACK (+)  @ IGNITION SWITCH HARNESS
 IGNITION 2  N/A  
 IGNITION 3  N/A  
 ACCESSORY/HEATER BLOWER 1  YELLOW/BLACK (+)  @ IGNITION SWITCH HARNESS
 ACCESSORY/HEATER BLOWER 2  N/A  
 KEYSENSE  N/A  
 PARKING LIGHTS ( - )  N/A  
 PARKING LIGHTS ( + )  GRAY (+)  @ HEADLIGHT SWITCH, See NOTE #2
 POWER LOCK  BLUE/WHITE (TYPE B)  @ DRIVERS DOOR MODULE in DRIVERS DOOR
 POWER UNLOCK  PURPLE/GREEN (TYPE B) (Requires Double Pulse)  @ DRIVERS DOOR MODULE in DRIVERS DOOR
 DOOR TRIGGER  USE DOME LIGHT SUPERVISION WIRE  
 DOMELIGHT SUPERVISION  BROWN/WHITE (-)  @ CCM, Connector 1, Pin 2 See NOTE #3
 TRUNK RELEASE  YELLOW/RED (5-Wire) See NOTE #4  @ CCM, Connector 1, Pin 6 See NOTE #3
 SLIDING POWER DOOR  N/A  
 HORN  BLACK/WHITE (+)  IN DRIVERS KICK PANEL, RED 17-Pin Plug
 TACH  Any wire NOT RED/BLUE or BLACK/BLUE (AC)  @ Any FUEL-INJECTOR
 WAIT TO START LIGHT  N/A  
 BRAKE  RED/BLACK (+)  @ SWITCH ABOVE BRAKE PEDAL
 FACTORY ALARM DISARM   DISARMS WITH UNLOCK, Single Pulse on UNLOCK wire, Disarms  
 ANTI-THEFT  AUDI'S TRANSPONDER ANTI-THEFT SYSTEM, See NOTE #5  @ IGNITION SWITCH TUMBLER
 EXTRA INFORMATION
 NOTE #1: When Installing a REMOTE STARTER, you MUST use BOTH Starter #1 and Starter #2 wires. Both wires must be connected to the STARTER/CRANKING Output wire from the Remote Starter or the vehcile will NOT Remote Start when the Engine is cold. NOTE #2: It may be necessary to break the PURPLE wire at the HEADLIGHT switch for the parking lights to turn on. NOTE #3: the CCM Module is mounted on the FLOORPAN in a protective box, under the carpet in front of the DRIVER SEAT. NOTE #4: this vehicle uses a 5-Wire TRUNK/HATCH Release System that will require an extra Relay part #775, to connect, See DIAGRAM NOTE #5: AUDI'S TRANSPONDER ANTI-THEFT SYSTEM, for Remote Starting requires part # 791 BYPASS MODULE and an Extra Ignition Key for Operation. to order go to the SECURITY BYPASS MODULE Page on this website
 
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