Golf Mk5
| Overview of connectors on radio unit “RCD 300” |

| 1 - | Multi-pin connector 1, 8-pin, loudspeaker outputs |
| q | Pin assignment → Chapter |
| 2 - | Multi-pin connector 2, 8-pin, voltage supply, CAN bus, telephone mute switch |
| q | Pin assignment → Chapter |
| 3 - | Multi-pin connector 3, 12-pin, telephone signal input |
| q | Pin assignment → Chapter |
| 4 - | Multi-pin connector 4, 12-pin, CD changer control and CD audio input signals |
| q | Pin assignment → Chapter |
| 5 - | Connector 5, aerial connection |
| q | Connector colour beige |
| q | Connection for aerial cable to aerial in rear window |
| 6 - | Connector 6, aerial connection |
| q | Connector colour transparent |
| q | Connection for aerial cable to aerial in rear window |
