| Number | X-pin, color | Description |
|---|---|---|
| X537 | 2 -pin, Black | Connector Left front midrange speaker |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | A | Left front mid-range speaker ground control | Left front speaker |
| 2 | E | Left front mid-range speaker voltage control | Left front speaker |