2003 audi a4 hu

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=96512
Printed Date: May 13, 2025 at 9:32 PM

Topic: 2003 audi a4 hu

Posted By: clim2090
Subject: 2003 audi a4 hu
Date Posted: August 19, 2007 at 8:57 PM

I've just bought new hu for my 2003 A4, i've bought the right harness(metra w/rca), i figure not all the wire's are right, the ACC(red wire) do not match the stock harness, i've search a lot of site, no luck, all they are saying are run the wire fromt he fuse box or some even said form the 75x, what are them, if i need to run off the fuse box, which fuse, there is no acc said on the box, need help

Replies:

Posted By: dwarren
Date Posted: August 20, 2007 at 12:34 AM

Audi's and VW's often do not have accessory behind the radio based on the year. You will have to locate an accessory wire under the dash, with a meter.

On the harness you bought, there is no accessory? Some of the Euro plugs have the accessory and constant switched.

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Posted By: clim2090
Date Posted: August 28, 2007 at 12:38 AM

the harness that i bought have the two wire but from the car, there only constant wire, no acc even on the stock harness. they don't have acc which was said by a lot of people in the forum and they use a some kind of of bus cable now

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