Bump tastic.

When you install the SDARS (sirius) module you need to pull the radio and swap the CDC audio socket for one that is taped back on the harness. This connects the SDARS module to the radio.

At the SDARS module there is a multiplug that you plug in that runs up to the glovebox CDC.

Hence you have two sets of connections for the CDC in the glovebox: One from the radio (factory) and one from the SDARS module. You only use one at a time.