| Number | X-pin, color | Description |
|---|---|---|
| X18774 | 12 -pin, Black | Connector Subwoofer speaker |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | A | Subwoofer speaker 1 negative signal | Amplifier |
| 2 | A | Subwoofer speaker 2 negative signal | Amplifier |
| 3 | A | Subwoofer speaker 3 negative signal | Amplifier |
| 4 | A | Subwoofer speaker 4 negative signal | Amplifier |
| 5 | E | Subwoofer speaker 1 voltage signal | Amplifier |
| 6 | E | Subwoofer speaker 2 voltage signal | Amplifier |
| 7 | E | Subwoofer speaker 3 voltage signal | Amplifier |
| 8 | E | Subwoofer speaker 4 voltage signal | Amplifier |
| 9 | Not used | ||
| 10 | Not used | ||
| 11 | Not used | ||
| 12 | Not used | ||