| Number | X-pin, colour | Description |
|---|---|---|
| X18774 | 12 -pin, Black | Plug connector Subwoofer speaker |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | Not used | ||
| 2 | E | Positive signal, subwoofer speaker 1 | Amplifier |
| 3 | A | Negative signal, subwoofer speaker 1 | Amplifier |
| 4 | E | Positive signal, subwoofer speaker 2 | Amplifier |
| 5 | A | Negative signal, subwoofer speaker 2 | Amplifier |
| 6 | Not used | ||
| 7 | Not used | ||
| 8 | E | Positive signal, subwoofer speaker 3 | Amplifier |
| 9 | A | Negative signal, subwoofer speaker 3 | Amplifier |
| 10 | E | Positive signal, subwoofer speaker 4 | Amplifier |
| 11 | A | Negative signal, subwoofer speaker 4 | Amplifier |
| 12 | Not used | ||