| Number | X-pin, colour | Description |
|---|---|---|
| X18180 | 3-pin, black | Plug connector CD changer |
| X01184 | 1-pin, metal | Plug connector CD changer |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | M | Ground | Ground point |
| 2 | E | Voltage supply terminal 30 | Connector terminal 30 |
| 3 | E/A | I-bus signal line | I-bus connector |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | A | Central locking signal Audio frequency | Amplifier |