OEM Mic wiring pin in MK4 Business CD
Posted: Mon Oct 03, 2022 9:45 pm
I have a 2004 Z4 3.0i Roadster (USA) with MK4 Business CD Navigation package. It has factory microphone pre-wired however doesn't seem to have the ULF module. So I connected a BT AUX module to the radio. I'm now trying to connect the BT phone module (not the OEM ULF, the cheap $20 USB AUX one) and want to use the factory mic connection. I understand the mic has to be powered too but I'm not able to find the wiring pin diagram for this connection. I'm trying to make out the mic+ and mic- pins which seems like Pin-6 and Pin-12 of Connector C below but not really sure. I also see Pin-10, Pin-11 and Pin-12 in Connector A which again seems Tel functions. I'm also confused where I should connect the power for the factory mic. Anyone has any info that can help? Thanks in advance.
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