| Number | X-pin, colour | Description |
|---|---|---|
| X3335 | 9-pin, Black | Plug connector Alarm control unit |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | M | Ground | Alarm OFF push-button |
| 2 | M | Ground | Ground point |
| 3 | A | Voltage supply terminal 30 | Connector terminal 30 |
| 4 | A | Negative activation, roof sign | Taxi transparency |
| 5 | A | Voltage supply terminal 30 | Connector terminal 30 |
| 6 | E | Voltage supply terminal 30 | Fuse F63 |
| 7 | M | Ground | Silent alarm push-button |
| 8 | A | Voltage supply terminal 30 | Connector terminal 30 |
| 9 | A | Positive activation, roof sign | Relay, transparency |