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06-18-2002, 09:26 AM
I just "installed" the Alpine CHA-S634 changer using the Soundgate adapter abmw35V4 in my 2001 e46 and the head unit is not recognizing that a changer exists. I have an in dash CD with HK.

The switch on the changer is set to #2 (m-bus). There are CDs in the changer and it does have power. Everything seems to be right but it's not showing up on the head unit.

btw, I did press the CD button on the head unit twice and several times.

Any ideas on why it's not working?

06-30-2002, 04:23 AM
To make the Alpine unit do MBUS you need to switch the switch +and+ use this cable:

<img src="">

See below for TommyX's install in his X5.

Neil J. McRae - Alive and Kicking

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