If it is a 2002 it's probably not a Concert Head unit but an RSND, I have one of these which allows you to play music from a line in, USB Stick or SD Card and can be controlled from the head unit, though information is limited to CDx track y etc
http://www.ebay.co.uk/itm/Connects2-...item2a2e85f88e
Oh and get youself over to the Intro section and get some pics of your car up, we do like pics
