Ok - just installed the Z1 (well, hubby did), and everything is working peachy keen except for my Sirius. All we get is static. We have the PNR-1 installed. Went and bought a PNR-2, still, same issue. Tried switching the attenae from our other vehicles, nothing. It seems that there is a connection, as we get the "acquiring signal" message, as well as being able to channel surf and see the song name, etc. The attenae was tried in both inside on the rear dash, and outside on the back window. Tried calling Sirius, they tell me it's the HU. I just paid $2200 for my set up, it better not be my HU.