I guess this is where I should start. Just bought my first mercedes. It is a 1981 CDT. The it has abrand new battey but it is not charging. My first thought is the alternator. Is there a specific alternator I must get for this make and model? I don't want to be fed a line for profit from some dealer and can't afford to have them do the replacement. BTW I got this for a seal and will sadly have to resell it. Can't afford repairs and insurance is likely to be sky high.