rockyproc

I'm having the same issue with Sirius sort of. I installed the cd-sb10 and a scv1 Sirius tuner to my avic z120bt but the volume is very muted with sirius selected. Any other source is fine. If I remove pwr to the scv1 with pwr still on the avic the volume returns to normal but after I turn the car off and return I have the cycle the pwr on the scv1 again. I've tried 2 different scv1 tuners and checked that the ip bus cable is connected properly. Any thoughts?