Question about 1996 Audi A4

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Can't locate the firewall hole on my 1996 audi a4 2.8L Manual.

I can't seem to find the hole which i put my power cord through in order to power subs ? And I can't find it online

Does anyone know ?

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In my 99, I ran it through the ECU's container. Open the hood -the ECU box is at the base of the windshield on the driver's side. Open the cover, unbolt the computer, and lift it to the side (you don't have to disconnect it, and I wouldn't). You'll be able to look down through the hole where the harness comes in, and you'll see your floormats. Run it up that way. There's a grommet on the ECU box that you can pop out and run the cable through to reach your battery.

Posted on Dec 11, 2008

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On the 2001 same spot just left of the ecu there is a gromet like 1 inch big pull it of you can see right thru the fire wall!

Posted on Aug 12, 2009


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