| Pin Num |
Signal |
|---|---|
| A2 | Telephone mute |
| A4 | Switch-on signal, radio - R- |
| A6 | Terminal 58 |
| A7 | Terminal 30 |
| A8 | Terminal 31 |
| B1 | Rear right loudspeaker (+) |
| B2 | Rear right loudspeaker (-) |
| B3 | Front right loudspeaker (+) |
| B4 | Front right loudspeaker (-) |
| B5 | Front left loudspeaker (+) |
| B6 | Front left loudspeaker (-) |
| B7 | Rear left loudspeaker (+) |
| B8 | Rear left loudspeaker (-) |
| C1 | Audio input right |
| C2 | Audio input left |
| C3 | Audio input earth |
| C7 | Telephone LF input signal (+) |
| C12 | Telephone LF input signal (-) |
4 pin USB Connector (RCD-030+ only)
| Pin Num |
Signal |
|---|---|
| 1 | Earth |
| 2 | USB D- |
| 3 | USB VCC +5V |
| 4 | USB D+ |



