N9 Radio

Plug connector overview

Pin	Type	Description / Signal type	Connection / Measuring notes
9	E/A	K-bus signal line	K-bus connector

10	E	Telephone mute signal	Transceiver/charging electronics

11	E	Speedometer (A) output signal	Instrument cluster

12	M	Ground	Ground connector

13	E	Antenna signal	Connector, antenna amplifier

14	E	Night light signal	Light module

15	E	Voltage supply terminal 30	Fuse F51

16	E	Voltage supply terminal R	Fuse F32

Pin	Type	Description / Signal type	Connection / Measuring notes
1		Not used

2		Not used

3		Not used

4		Not used

5	E	AF signal, navigation, positive	Navigation control unit

6		Not used

7		Not used

8		Not used

9	E	AF signal, navigation, negative	Navigation control unit

10		Not used

11	E/A	Navigation bus signal line	Navigation control unit

12		Not used

Pin	Type	Description / Signal type	Connection / Measuring notes
1	A	Positive activation, rear right loudspeaker	Amplifier

2	A	Positive activation, front right loudspeaker	Amplifier

3	A	Positive activation, front left loudspeaker	Amplifier

4	A	Positive activation, rear left loudspeaker	Amplifier

5	A	Negative activation, rear right loudspeaker	Amplifier

6	A	Negative activation, front right loudspeaker	Amplifier

7	A	Negative activation, front left loudspeaker	Amplifier

8	A	Negative activation, rear left loudspeaker	Amplifier