I got a Pioneer CD changer for the Firebird today but it seems to be missing a wire on the power connector. It has one orange, a red, and then a missing wire. The unit has 3 pins and the plastic is cracked on the connector where the third wire should be. Anyone with an older CD changer have an idea what the wire should be? The model number is CDX-FM633S.

Chris

 

Black, it's ground. Looking from the back it should be the left most wire.