Need help getting the CD changer to work. First I must admit I'm a novice at installing. I've a 2005 X5 with Nav/No DSP.

I've purchased
1. Alpine CHA-S634
2. Alpine KCA-130B
3. Peripheral BMWALPX 1996-2003 BMW to Alpine Changer

Connected CHA-S634 to KCA-130B; KCA-130B to Peripheral BMWALPX 1996-2003; BMWALPX to 3-pin/6-pin in the trunk. Tried the Bus selector switch in both Ai-Net System and Mini-BUS system modes.

When I switch the mode on the radio it recogizes the CD player but nothing plays.

What am I doing wrong?

Thanks in advance