| Number | X-pin, colour | Description |
|---|---|---|
| X78 | 4-pin, Black | Plug connector Brake light switch |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | M | Ground | Ground connector |
| 2 | A | Brake light signal | AGS transmission control unit |
| 3 | A | Brake light signal | Light module |
| 4 | E | Terminal R | Fuse F41 |