A new owner of a 2003 C320 and just have a question about adding the aux input..


I have a 2003 C320 with what I have been able to determine is the Audio 30 head unit with a CD Changer and no tape deck?

I've read quite a few posts but am confused, some refer to any car with a cd changer should have the aux input in the glove box but my car has no aux input in the glove box.

and then some posts mention that there should be a "pre-wire" for the aux input? anyways I am just looking for the easiest way to add the aux input, if I have to get a unit that plugs into the cdchanger (I don't think I even own any cds anymore)