I've hooked up the Nav DVD and that part works but I can't figure out how to get the Antenna to link up so the GPS portion of the computer works. I've tried the brown and the green harness but they do not seem to be the right ones. Is there another connection to look for or series of antenna wiring I'm missing.

Thanks.

You need to install the antenna it goes on the top of the rear glass

Thanks. Isn't the 2006 A6 Navigation antenna already prewired on the car? I'm looking for the connector if it is.