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Vehicle Wiring Details for your
2008-2009 Audi TT 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 2008-2009 Audi TT . 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 (+)   @ VESCM, (2-PIN PLUG(L), PIN 1, NOTE #2
 STARTER  RED/BLACK (+)  @ VESCM, (BLACK, 12-PIN PLUG(G), PIN 1, NOTE #2
 STARTER 2  N/A  
 IGNITION 1  BLACK/WHITE (+)  @ VESCM, (BLACK, 12-PIN PLUG(G), PIN 11, NOTE #2
 IGNITION 2  N/A  
 IGNITION 3  N/A  
 ACCESSORY/HEATER BLOWER 1  N/A  
 ACCESSORY/HEATER BLOWER 2  N/A  
 KEYSENSE  N/A  
 PARKING LIGHTS ( - )  GRAY/YELLOW (-), NOTE #3  @ HEADLIGHT Switch or VESCM, (BLACK, 16-PIN PLUG(E), PIN 1, NOTE #2
 PARKING LIGHTS ( + )  GRAY/BLACK(+)(Left Front) and GRAY/RED(+)(Right Front), NOTE #4  @ VESCM, (11-PIN PLUG(A), PIN 7 and (11-PIN PLUG(D), PIN 10, NOTE #2
 POWER LOCK  PURPLE/BLUE (TYPE B) thru a Resistor, (Measure)  @ DRIVERS DOOR CONTROL MODULE, (32-PIN PLUG), PIN 32
 POWER UNLOCK  Use LOCK wire (TYPE B) thru a Resistor, (Measure)  
 DOOR TRIGGER  GRAY/PURPLE (-)  @ DRIVERS DOOR CONTROL MODULE, (20-PIN PLUG), PIN 17 or 7
 DOMELIGHT SUPERVISION  BLUE/GRAY (-)  @ VESCM, (12-PIN PLUG(B), PIN 11, NOTE #2
 TRUNK RELEASE  BROWN/PURPLE (-)  @ DRIVERS DOOR CONTROL MODULE, (32-PIN PLUG), PIN 30
 SLIDING POWER DOOR  N/A  
 HORN  BLACK/YELLOW (+)  @ VESCM, (6-PIN PLUG(J), PIN 6, NOTE #2
 TACH  NOTE #5  @ Any FUEL-INJECTOR
 WAIT TO START LIGHT  N/A  
 BRAKE  BLACK/YELLOW (+)  @ BRAKE PEDAL Switch or VESCM, (BLACK, 16-PIN PLUG(E), PIN 2, NOTE #2
 FACTORY ALARM DISARM   BLUE/WHITE (-)  @ DRIVERS DOOR CONTROL MODULE, (20-PIN PLUG), PIN 16
 ANTI-THEFT  AUDI'S TRANSPONDER ANTI-THEFT SYSTEM, See NOTE #1  @ IGNITION SWITCH TUMBLER
 EXTRA INFORMATION
 NOTE #1: AUDI'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: the VESCM, (Vehicle Electronic System Control Module) is the RELAY BOX under the DRIVERS DASH. NOTE #3: when triggering this wire you will need to INTERRUPT the HEADLIGHT Switch OFF wire, BLACK/WHITE at the HEADLIGHT Switch or VESCM,(BLACK, 16-PIN PLUG(E), PIN 16. NOTE #4: the LEFT REAR Parking light is a GRAY/BLACK(+)at the VESCM, (12-PIN PLUG(C), PIN 10, the RIGHT REAR Parking light is a GRAY/BLACK(+) at the VESCM, (12-PIN PLUG(B), PIN 9 NOTE #5: when using the TACH wire, use any wire NOT RED STRIPE on the 2.0T and on the 3.2 NOT the RED/BLACK, all TEST (AC)
 
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