| Pin | Type | Description / Signal type | Connection /
Measuring notes |
|---|
| 1 | A | Positive activation, front left loudspeaker | Left front speaker |
| | | |
| 2 | A | Positive activation, front right loudspeaker | Right front speaker |
| | | |
| 3 | A | Positive activation, rear left loudspeaker | Left rear speaker |
| | | |
| 4 | E | Telephone mute signal | Transceiver/charging electronics |
| | | |
| 5 | E | Voltage supply terminal R | Unloader relay terminal R |
| | | |
| 6 | A | Positive activation, rear right loudspeaker | Right rear speaker |
| | | |
| 7 | E/A | I/K-bus signal link | Connector, I/K-bus |
| | | |
| 8 | A | Negative activation, front left loudspeaker | Left front speaker |
| | | |
| 9 | E | Terminal 30 | Fuse F56 |
| | | |
| 10 | E | Speedometer (A) output signal | Instrument cluster Integrated electronic control unit (IKE) Plug connector, telephone |
| | | |
| 11 | A | Negative activation, front right loudspeaker | Right front speaker |
| | | |
| 12 | A | Negative activation, rear left loudspeaker | Left rear speaker |
| | | |
| 13 | E | Night light signal | Light module Plug connector, telephone |
| | | |
| 14 | A | Negative activation, rear right loudspeaker | Right rear speaker |
| | | |
| 15 | M | Radio ground | Ground point |
| | | |
| 16 | E | Antenna signal | Diversity |
| | | |
| 17 | | Not used | |
| | | |
| Pin | Type | Description / Signal type | Connection /
Measuring notes |
|---|
| 1 | A | Positive activation Audio cassette right | On-board monitor |
| | | |
| 2 | M | Negative activation Audio cassette right | On-board monitor |
| | | |
| 3 | | Not used | |
| | | |
| 4 | | Not used | |
| | | |
| 5 | M | Negative signal, low frequency | Video module USA Navigation control unit |
| | | |
| 6 | A | Positive activation Audio cassette left | On-board monitor |
| | | |
| 7 | M | Negative activation Audio cassette left | On-board monitor |
| | | |
| 8 | | Not used | |
| | | |
| 9 | | Not used | |
| | | |
| 10 | M | Positive signal, low frequency | Video module USA Navigation control unit |
| | | |