Hi I've just replaced my Blaupunkt head unit (factory fitted to my Alfa 156 2003) with a new Blaupunkt head unit (MP56) capable of playing from my usb memory stick and sd cards. It works fine but I have one problem. The car was fitted with a Clarion dc628 cd changer. It worked fine with the old head unit but not with the new one. The unit sees cds in it but cannot play anything. I suspect that some of the pinouts are wrong but I'm worried about crossing wires and blowing up my new head unit!
Can anybody offer any suggestions or help please?