I know this topic has come up several times but Becker Autosound has an update page on their website and after a few e-mails back & forth I am still unable to determine if any of the units at this link http://www.beckerautosound.com/upgrade.html would be able to replace my Becker 1432 currently in MY 1993. Even after telling The guy that answers the e-mails that I have a 1993 500e he has so far asked the following;What amps do I have in the car? (I don't know)Do you have the active bass system 1 black amp in the trunk? (i think so)He claims that any of these units are plug & play. I'm a little skeptical given his apparent lack of knowledge on the system in the 93. If any one can shed light on this please let me know.