duburban

Hey saab guys, i'm coming over here from the Audi forum for the sake of hooking my bro up w/ a cd changer. Hes driving a 99 93. I think its a fairly base model, no leather. I want to hook up my old clarion 6 disc to his head unit. Where should i look for this cable and is it possible that he has one pre-wired?

PS... i searched!