Hi SfloriII,
It's been a while since we talked last. To address your problem I might suggest putting a temp antenna (mag mount type) to test the stength of the receiver. I have one if you need one. What's up with the CD changer?? Let me know if I can help you further.
Cleeve Morrison
La Jolla Audio Repair
www.mercedesradiorepair.net
P.S. For those that don't know, we have been able to interface the sat. radio into the factory units for several years now. Need more info. contact our website above.