I have an OEM changer from a '93 850 (model 9166800-4969). I would like to install it in a '94 960 with the sc810 head unit. They both have an 8-pin DIN connector in common and the 960 has the cable already routed to the trunk. My only problem is that the changer also has what looks like a powersupply plug also. I didn't see the 850 so I don't know if it was used or not. I tried the hookup with just the DIN and nothing happened - zippo. Pressed CD button on the HU and nothing. Does anyone know what I need to do? Is there a power supply in the 960 trunk that I can afford to splice and run to the cd changer?