Sorry if this has been asked before...

I have a 1998 C230. Is this car pre-wired for a CD changer? The head unit is the same as the one in a later C280 I looked at, that had a CD changer. (i.e. it has the same changer controls) It is a non-Bose system. If it is pre wired, where do I find the cable(s)? I see a few of these changers on ebay, and I just don't want to buy one if I can't use it.

Thanks in advance!