2004-05 Audi A4 1.8T Sedan Stereo/Alarm Wiring
Printed From: the12volt.com
Forum Name: Vehicle Wiring Information & File Requests
Forum Discription: Request Car Alarm, Car Stereo, Cruise Control, Remote Starter, Navigation, Mobile Video, and Other Vehicle Specific Wiring Info, Manuals, Tech Tips
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=98716
Printed Date: May 03, 2025 at 5:49 PM
Topic: 2004-05 Audi A4 1.8T Sedan Stereo/Alarm Wiring
Posted By: theman5952
Subject: 2004-05 Audi A4 1.8T Sedan Stereo/Alarm Wiring
Date Posted: November 07, 2007 at 12:00 AM
Looking for wiring for a 2005 Audi A4 1.8T Sedan, has factory subwoofer so I assume it has a factory amp.
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-Joe-
'04 Audi A4 1.8TQ6MT
Replies:
Posted By: techman93
Date Posted: November 07, 2007 at 7:20 AM
Audio/Mobile Video
WIRE COLOR POLARITY LOCATION
Battery RED / WHITE (+) RADIO HARNESS
Accessory BLACK/ BLUE (+) RADIO HARNESS
Ground BROWN (-) RADIO HARNESS
Illumination GRAY/BLUE (+) RADIO HARNESS
Amp Turn On WHITE
LF Speaker(+) BLUE/WHITE OR BROWN / GREEN
LF Speaker(-) BROWN / WHITE OR BLUE / YELLOW
RF Speaker(+) RED OR BROWN / BLUE
RF Speaker(-) BROWN / RED OR GREEN/ BLUE
LR Speaker(+) BROWN / WHITE OR BROWN / YELLOW
LR Speaker(-) BLUE/WHITE OR RED / YELLOW
RR Speaker(+) BROWN / RED OR BROWN / BLACK
RR Speaker(-) RED OR RED / GREEN
Steering Cntrls
THIS VEHICLE MAY BE EQUIPPED WITH OPTIONAL ONSTAR® TELEMATICS EQUIPMENT. USE AN APPROPRIATE INTEGRATION HARNESS OR INSTALLATION PROCEDURE TO ENSURE PROPER FUNCTION OF THIS EQUIPMENT.
Radio Security YES
Security
WIRE COLOR POLARITY LOCATION
Battery RED (+) IGNITION SWITCH HARNESS
Ignition 1 BLACK (+) IGNITION SWITCH HARNESS
Starter 1 RED / BLACK (+) IGNITION SWITCH HARNESS
All Door Trigger BROWN / WHITE (-) IN HARNESS IN DRIVERS KICKPANEL
Trunk Trigger WHITE/ BLACK (-) IN HARNESS IN DRIVERS KICKPANEL
Parking Lights GRAY/BLACK (+) AT VEHICLE LIGHT SWITCH
Convenience
WIRE COLOR POLARITY LOCATION
Headlights-Lo WHITE/ BLACK (+) AT VEHICLE LIGHT SWITCH
Remote Start
WIRE COLOR POLARITY LOCATION
Battery RED (+) IGNITION SWITCH HARNESS
Ignition 1 BLACK (+) IGNITION SWITCH HARNESS
Ignition 2 RED (+) IGNITION SWITCH HARNESS
Accessory 1 YELLOW/BLACK (+) IGNITION SWITCH HARNESS
Starter 1 RED / BLACK (+) IGNITION SWITCH HARNESS
Starter 2 BLUE (+) IGNITION SWITCH HARNESS
Anti-Theft Type UNIVERSAL IMMOBILIZER
Anti-Theft THE KEY SENDS AN RF SIGNAL TO THE BCM MODULE THROUGH AN ANTENNA LOCATED AROUND THE IGNITION CYLINDER
Key Sense RED (+) IGNITION SWITCH HARNESS
Tachometer GRAY (AC) AT IGNITION COIL
Speed Sense WHITE/ BLUE (AC) RADIO HARNESS
CAN ALSO BE FOUND AT ABS CONTROL MODULE LOCATED ON DRIVERS SIDE FIREWALL. PIN 33
Parking Lights GRAY/BLACK (+) AT VEHICLE LIGHT SWITCH
Brake Lights RED / BLACK (+) AT SWITCH ABOVE BRAKE PEDAL
Doorlocks/Windows
WIRE COLOR POLARITY LOCATION
Power Unlock RED / BROWN (-) IN HARNESS IN DRIVERS KICKPANEL
PowerLock GRAY/WHITE (-) IN HARNESS IN DRIVERS KICKPANEL
Posted By: theman5952
Date Posted: November 07, 2007 at 2:56 PM
Thank you.
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-Joe-
'04 Audi A4 1.8TQ6MT
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