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2003 Audi TT Car Alarm Wiring Diagram


Whether your an expert Audi TT car alarm installer, Audi TT performance fan or a novice Audi TT enthusiast with a 2003 Audi TT, a Audi TT car alarm wiring diagram can save yourself a lot of time. One of the most time consuming tasks with installing an after market car alarm, car security, car remote start, automatic remote starter, shock sensor, tilt sensor, car alarm sensor or any auto alarm is identifying the correct color car security wires for a 2003 Audi TT headlight bulb size you need for your low beam or high beam and save time. Also, find your other car light bulb sizes including your fog light, reverse light, turn signal, brake light and more. It’s that easy!

The Modified Life staff has taken all its Audi TT car alarm wiring diagrams, Audi TT car security wiring diagrams, Audi TT car alarm wire diagrams, Audi TT car security wiring schematics, Audi TT car security diagrams, Audi TT remote starter wiring diagrams and cataloged them online for our visitors to use for free. Our automotive wiring diagrams allow you to enjoy your new auto security electronics rather than spend countless hours trying to figure out which wires goes where.

Feel free to use any Audi TT auto alarm wiring diagram that is listed on Modified Life but keep in mind that all information here is provided “as is” without any warranty of any kind and most of the auto security wiring diagrams listed on our enthusiast website are submitted by the Modified Life community. Use of the wiring information is at your own risk. Always verify all wires, wire colors and diagrams before applying any information found here to your 2003 Audi TT.

Questions

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2003 Audi TT Car Alarm Wiring Diagram

Battery Constant 12v+ Positive Wire (+): Red
Battery Constant 12v+ Positive Wire Location: Ignition Switch Harness

Starter Positive Wire (+): Red/Black (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 vehicle will not remote start when the engine is cold.)
Starter Positive Wire Location: Ignition Switch Harness

Second Starter Positive Wire (+): Blue or Red/Black (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 vehicle will not remote start when the engine is cold.)
Second Starter Positive Wire Location: Ignition Switch Harness

Ignition Positive Wire (+): Black
Ignition Positive Wire Location: Ignition Switch Harness

Accessory Positive Wire (+): Black/Red
Accessory Positive Wire Location: Ignition Switch Harness

Parking Light Negative Wire (-): If Equipped with DRL. 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.
Parking Light Negative Wire Location: At Headlight Switch See Diagram

Parking Light Positive Wire (+): Not Equipped with DRL. 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.
Parking Light Positive Wire Location: At Headlight Switch See Diagram

Power Door Lock Negative Wire (-): Purple/Gray To Brown/Yellow
Power Door Lock Negative Wire Location: At Central Locking Control Module (C3, Pin 12). The central locking control module is located in the drivers side quarter panel in front of the fender well.

Power Door Unlock Negative Wire (-): Red/Gray to Green/Yellow (Requires a Double Pulse)
Power Door Unlock Negative Wire Location: At Central Locking Control Module (C3, Pin 6). The central locking control module is located in the drivers side quarter panel in front of the fender well.

Door Trigger Positive Wire (+): 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.
Door Trigger Positive Wire Location: At Central Locking Control Module (C5, Pins 1 and 10). The central locking control module is located in the drivers side quarter panel in front of the fender well.

Dome Light Supervision Wire: Brown/White (-)
Dome Light Supervision Wire Location: At Central Locking Control Module (C1, Pin 2). The central locking control module is located in the drivers side quarter panel in front of the fender well.

Trunk Release Negative Wire (-): Purple/Green (5-Wire). The trunk/hatch release system on this vehicle is a 5-wire circuit and will require an extra relay.
Trunk Release Negative Wire Location: At Central Locking Control Module (C4, Pin 5). The central locking control module is located in the drivers side quarter panel in front of the fender well.

Horn Negative Negative Wire (-): Black/Yellow (+)
Horn Negative Negative Wire Location: At Horn Relay, Under Drivers Side Of Dash

Tachometer Wire Negative Wire (-): Green/Brown
Tachometer Wire Negative Wire Location: At ECM (Pin 37). The ECM is located under the plastic cover on the firewall under the hood.

Brake Light Positive Wire (+): Red/Black (+)
Brake Light Positive Wire Location: At Switch Above Brake Pedal

Factory Alarm Disarm Wire (-): Disarms With Unlock, Single Pulse On Unlock Wire, Disarms
Factory Alarm Disarm Wire Location: N/A

Anti-Theft Type: Transponder Anti-Theft System, Requires Bypass Module and Extra Ignition Key.

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