| Number | X-pin, colour | Description |
|---|---|---|
| X2806 | 9-pin, black | Plug connector Relay, tachograph |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | Not used | ||
| 2 | A | Signal, terminal 87 | Tachograph |
| 3 | Not used | ||
| 4 | Not used | ||
| 5 | Not used | ||
| 6 | E | Voltage supply terminal 30 | Fuse box |
| 7 | Not used | ||
| 8 | E | Voltage supply terminal R | Fuse box |
| 9 | A | Signal, terminal 85 | Connector terminal 85 |