most 124 M/Bs (which I assume yours is came with the BE1432) unfortunatelly in 94 M/B started using the new generation radios, so yours being the last model year (95) has that.... you can use an ordinary alpine cd changer with your factory HU (with an adaptor cable) ie an s630.... as far as the other cd changer goes, if it is in good condition take some HQ pics and put it on ebay.... cd changers that work with the BE 1432 are somewhat rare and people on buleting boards look for them ofter.... so all is not lost...

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95 M3 (US)
94 318is (EURO)
87 190E 2.6