I've got a Sony CDX-45 10 disc changer that i'm trying to sell. Some guy has a VW New Beetle and he wants to buy it, but he's wondering what kind of connector(s) he'll have to buy in order to get the changer to work in his car. Supposedly the New beetle's are pre-wired from the factory for a changer in the trunk, so they should already have a very specific style of connector, right? Can you get an adapter at any local sound shop? Or what would he have to do to hook up my changer to his car? Thanks.