Which pin on stock headunit is for MOBILE PHONE mute?

[henryw525i]

Just installed the new car kit and would like to hook up to the OEM BMW mute feature that I know my headunit offers. Mine is the square plug setup? Which pin do I have to connect the wire to?

thnx in advance:)

[Reidal]

The Bentley shows pin 4 (Wht/Brn) of the larger radio connectors (17pin) as the Cellphone wire.

It should be possible to test if you ground it through a resistor (I'd suggest 500ohm or better to reduce any current flow in case it is not the right one).

Also information which may help can be found here

http://www.bmwe34.net/e34main/Upgrade/Stereo_radio.htm



Just installed the new car kit and would like to hook up to the OEM BMW mute feature that I know my headunit offers. Mine is the square plug setup? Which pin do I have to connect the wire to?

thnx in advance:)