Milehighscottie

Hi folks,

I am on my third Audi, had two C5s, a 2.7t and a 4.2. Now I have just bought this 2007 A6 3.2. It didn't have Sirius or Nav, so I bought units off of Ebay, along with s recent dvd. Install was plug n play, except that I get this message when trying to use Sirius:

ANTENNA
A technical problem occurred.
Contact your Audi dealer for support

Now, I had plugged in the green antenna lead to the SiriusXM module, and got this error. I also plugged in an aftermarket antenna (magnetic stick type) and get the same error.

Any guidance on what is up? I do get music, but it's really mediocre quality, or doesn't tune at all sometimes.

TIA