Audi  TT 2003-2004
 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  BLACK/RED (+)  @ IGNITION SWITCH HARNESS
 ACCESSORY/HEATER BLOWER 2  N/A  
 KEYSENSE  N/A  
 PARKING LIGHTS ( - )  If Equipped with DRL, See NOTE #2  @ HEADLIGHT SWITCH, See DIAGRAM
 PARKING LIGHTS ( + )  NOT equipped with DRL, See NOTE #2  @ HEADLIGHT SWITCH See DIAGRAM
 POWER LOCK  PURPLE/GRAY to BROWN/YELLOW (TYPE B)  @ CENTRAL LOCKING CONTROL MODULE, C3 PIN 12, See NOTE #3
 POWER UNLOCK  RED/GRAY ot GREEN/YELLOW (TYPE B) (Requires Double Pulse)  @ CENTRAL LOCKING CONTROL MODULE, C3 PIN 6, See NOTE #3
 DOOR TRIGGER  See NOTE #4  @ CENTRAL LOCKING CONTROL MODULE C5 PINS 1 and 10, See NOTE #3
 DOMELIGHT SUPERVISION  BROWN/WHITE (-)  @ CENTRAL LOCKING CONTROL MODULE C1 PIN 2, See NOTE #3
 TRUNK RELEASE  PURPLE/GREEN (5-Wire), See NOTE #5  @ CENTRAL LOCKING CONTROL MODULE, C4 PIN 5, See NOTE #3
 SLIDING POWER DOOR  N/A  
 HORN  BLACK/YELLOW (+)  @ HORN RELAY, UNDER DRIVERS SIDE of DASH
 TACH  GREEN/BROWN (AC)  @ ECM, PIN 37, See NOTE #6
 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 #7  @ 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: On vehicles with DLR, use the GRAY/YELLOW (+) at the HEADLIGHT SWITCH, use a RELAY to isolate this wire use the DIAGRAM on the (-) PARKING LIGHTS INFO. On vehicles without the DRL, use the GRAY/BROWN and GRAY/PURPLE (+) wires at the HEADLIGHT SWITCH and use the DIAGRAM NOTE #3: The CENTRAL LOCKING CONTROL MODULE is located in the DRIVERS SIDE QUARTER PANEL in front of the FENDERWELL NOTE #4: The DRIVERS DOOR is a BROWN/YELLOW (-) and the PASSENGER DOOR is a BROWN/WHITE (-) both wires are at the CENTRAL LOCKING MODULE, when connecting to an ALARM SYSTEM use BOTH wires and DIODE ISOLATE See DIAGRAM NOTE #5: the TRUNK/HATCH Release system on this vehicle uses a 5-Wire Circuit and will require an extra Relay Part #775 to connect, See DIAGRAM NOTE #6: The ECM is located under the PLASTIC COVER on the FIREWALL under the hood. NOTE #7: AUDI'S TRANSPONDER ANTI-THEFT SYSTEM, Requires Bypass Module, Part # 791 Bypass and an extra ignition key for REMOTE STARTING ONLY to order, go to the SECURITY BYPASS MODULE Page on this website