hi judb, my head unit is a standard VW head unit, its the BETA model, and it has a rectangular CD changer connection, but the CD changer cable installed in my car has 13 pin round connectors on both ends, i have a cable to connect my phatbox to the changer cable in the boot but i cant connect my head unit to the other end of the CD changer cable behind the dash( round into rectangle wont seem to go, LOL). Was wondering if i can get an adapter to fit in the back of the head unit(square plug) and the CD changer cable(13 pin round plug), phoned a few places but no one seems to know anything! Hope that makes things clearer, i am starting to wish i hadn't sold my single slot CD player, thanks.