Whether your an expert Audi electronics installer or a novice Audi enthusiast with a 2003 Audi A6, a car stereo wiring diagram can save yourself a lot of time. One of the most time consuming tasks with installing an after market car stereo, car radio, car speakers, car amplifier, car navigation or any car electronics is identifying the correct color wires for a 2003 Audi A6.

The Modified Life staff has taken all its Audi car radio wiring diagrams, Audi car audio wiring diagrams, Audi car stereo wiring diagrams, Audi car radio wiring schematics, Audi car wiring diagrams and cataloged them online. Feel free to use any Audi car stereo 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 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 A6.

If you can’t find your car audio wire diagram, car stereo wire diagram or car radio wire diagram on Modified Life, please feel free to post a car wiring diagram request (Car Stereo Wiring Diagram Request Page) and we’ll do our best to find you the information you need for your mobile installation.

If you would like to help the Modified Life community by adding a car audio wiring diagram, car stereo wiring diagram or car radio wiring diagram to our resource, please feel free to post any additional information about the 2003 Audi A6 on this page.

2003 Audi A6 Car Radio Stereo Audio Wiring Diagram

Car Radio Constant 12v+ Wire: Red/White
Car Radio Switched 12v+ Wire: Black/Blue
Car Radio Ground Wire: Brown
Car Radio Illumination Wire: Gray/Blue
Car Stereo Dimmer Wire: N/A
Car Stereo Antenna Trigger: Red
Car Stereo Amp Trigger Wire: Red/Blue (At the subwoofer amplifier.)
Car Stereo Amplifier Location: Mounted under the rear deck.
Car Audio Front Speakers Size: N/A
Car Audio Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): Blue/White
Left Front Speaker Negative Wire (-): Brown/White
Right Front Speaker Positive Wire (+): Red
Right Front Speaker Negative Wire (-): Brown/Red
Car Audio Rear Speakers Size: N/A
Car Audio Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Brown/White
Left Rear Speaker Negative Wire (-): Blue/White
Right Rear Speaker Positive Wire (+): Brown/Red
Right Rear Speaker Negative Wire (-): Red