Please Help
Tomorrow I will be working on my friend's benz 93 C220 2.2L, and he is having problem with his speakers in the front two doors. From what I know, he bought a head unit with 6 speakers from Best Buy, installed them himself, and they all work with the exception of the two speakers on the front doors. Why is that? The old speakers worked along with the old head unit (stock one).
Could it be, because the new head unit only has output for 4 speakers? If so, what should be done to connect all 6 speakers? Any ideas? Thank you very much for you timely response.



