I bought a used OEM cd changer for my neon off Ebay, it said for 02 and up, I have a single disc in dash and it has disc up and down controls so I figured it would plug and play. When I go to plug it in to the back of the radio it has a circle type plug but my radio has a square spot. Has anyone took one out and maybe has the correct cable they wanna sell, or do you know if this will just not work? The plug coming from the cd changer right now looks like an aftermarket type plug for an old sony or pioneer type. Any help would be great since the local dodge dealer doesn't have a listing for this part.