| Number | X-pin, colour | Description |
|---|---|---|
| X63082 | 1-pin, black | Component connector |
| X63083 | 1-pin, black | Component connector |
| X1806 | 12-pin, black | Component connector |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | A | Power supply (+) | Battery |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | E | Power supply (+) | System battery |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | E/A | K-bus signal line | K-bus connector |
| 2 | M | Ground connection | Ground point |
| 3 | Not used | ||
| 4 | E | Signal wire | Control unit for electrically heated catalytic converter |
| 5 | Not used | ||
| 6 | Not used | ||
| 7 | Not used | ||
| 8 | Not used | ||
| 9 | Not used | ||
| 10 | E | Control unit supply | Fuse F21 |
| 11 | Not used | ||
| 12 | E | Ground signal | Ignition switch M73 as of 1999_09 |