I just purchased a preowned 2004 A4 Avant 3.0 to replace my 1990 BMW 535i. The factory stereo has the SAT button and the car is rigged with the factory antenna. I want (need!) to install Sirius. If I am able to get my hands on a Sirius tuner through ebay or other, is installation fairly easy? I'd rather avoid using a dealer. Any help would be appreciated.

 

yes very easy.....http://www.audiworld.com/tech/elec121.shtml This is for a sedan, but pretty close.

 

Just a quick question....will this work on the A4 Quattro as well??

 

Mine's a quattro. Not sure I understand.