| Number | X-pin, colour | Description |
|---|---|---|
| X403 | 12 -pin, Natural | Plug connector Left front speaker |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | Not used | ||
| 2 | E | Positive activation, front left woofer | Radio Amplifier |
| 3 | A | Negative activation, front left woofer | Radio Amplifier |
| 4 | E | Positive activation, front left mid-range speaker | Amplifier |
| 5 | A | Negative activation, front left mid-range speaker | Amplifier |
| 6 | Not used | ||
| 7 | Not used | ||
| 8 | E | Telephone AF+ | Connector NF+ |
| 9 | A | Telephone AF- | Connector NF- |
| 10 | E | Positive activation, front left tweeter | Amplifier |
| 11 | A | Negative activation, front left tweeter | Amplifier |
| 12 | Not used | ||