| Number | X-pin, colour | Description |
|---|---|---|
| X3528 | 3-pin, Black | Plug connector Taxi transparency |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | E | Negative activation, roof sign | Alarm control unit |
| 2 | Not used | ||
| 3 | E | Voltage supply terminal 30 | Relay, transparency |