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Duotone · 12th May 2019, 20:32

These are the connections for the BMW plug.

Pin 4 is not connected as it is for a telephone mute.

Pin 7 is for the K Bus only needed if you have a CD Changer connected.

Dave T

12th May 2019, 20:32	#7
Duotone This is my second home 75 Join Date: Nov 2006 Location: Leeds Posts: 8,432 Thanks: 176 Thanked 907 Times in 716 Posts	These are the connections for the BMW plug. Pin 4 is not connected as it is for a telephone mute. Pin 7 is for the K Bus only needed if you have a CD Changer connected. Dave T Last edited by Duotone; 12th May 2019 at 20:34..