deez design

Hopefully you got it all figured out. I had an AppRadio 3 in my B7 A4 w/ Bose. I hope you went with the harness and mounts from the http://enfigcarstereo.com/link that "rockthebeef" posted above. They have the best aftermarket head unit integration kits for the B7 Audi A4 in my opinion after much research. I had initially went with a Metra kit but ended up swapping for the enfig kit. Even the mounting kit looked better with the surrounding interior. And they also have install videos.

I know! It negates the convenience of using waze thru the head unit.