The CD changer is likely Alpine, but the wiring is MBZ proprietary...won't hook up to any Alpine head units.

However, that changer is compatible with most '92-'95 Benzes so would be easy to sell if you commit to upgrading your whole system...BTW, I seriously doubt you can change just the head unit; Bose is notorious for setting up systems that are impossible to mess with!

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Best regards, Michael
'92 500E
'88 300TE