| Number | X-pin, colour | Description |
|---|---|---|
| X13646 | 16-pin, black | Component connector Radio control unit |
| X13647 | 8-pin, black | Component connector Radio control unit |
| X13648 | 12-pin, natural | Component connector Radio control unit |
| X13649 | 12-pin, black | Component connector Radio control unit |
| X01019 | 1-pin, metal | Plug connector, aerial input radio |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | Not used | ||
| 2 | Not used | ||
| 3 | Not used | ||
| 4 | Not used | ||
| 5 | Not used | ||
| 6 | Not used | ||
| 7 | Not used | ||
| 8 | Not used | ||
| 9 | A/E | K-bus signal | K-bus connector |
| 10 | E | Telephone mute circuit | Connector X4553 MUTE |
| 11 | E | Telephone on | Interface |
| 12 | M | Ground | Ground point |
| 13 | A | Aerial switching signal | Aerial amplifier |
| 14 | Not used | ||
| 15 | E | Terminal 30 | Fuse F41 |
| 16 | E | Terminal R | Fuse F7 |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | A | Signal, AF radio, rear right + | Amplifier |
| 2 | A | Signal, AF radio, front right + | Amplifier |
| 3 | A | Signal, AF radio, front left + | Amplifier |
| 4 | A | Signal, AF radio, rear left + | Amplifier |
| 5 | A | Signal, AF radio, rear right - | Amplifier |
| 6 | A | Signal, AF radio, front right - | Amplifier |
| 7 | A | Signal, AF radio, front left - | Amplifier |
| 8 | A | Signal, AF radio, rear left - | Amplifier |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | Not used | ||
| 2 | E | Signal, CD changer AF - | CD changer |
| 3 | Not used | ||
| 4 | Not used | ||
| 5 | Not used | ||
| 6 | Not used | ||
| 7 | Not used | ||
| 8 | E | Signal, CD changer AF +, left | CD changer |
| 9 | E | Signal, CD changer AF +, right | CD changer |
| 10 | Not used | ||
| 11 | A | Signal, TV AF + | Video module control unit |
| 12 | A | Signal, TV AF - | Video module control unit |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | E | Signal, audio cassette, left + | On-board monitor control unit |
| 2 | E | Signal, audio cassette, left - | On-board monitor control unit |
| 3 | Not used | ||
| 4 | Not used | ||
| 5 | A | Signal Positive activation | Navigation computer |
| 6 | E | Signal, telephone AF + | Telephone speaker |
| 7 | E | Signal, audio cassette, right + | On-board monitor control unit |
| 8 | E | Signal, audio cassette, right - | On-board monitor control unit |
| 9 | Not used | ||
| 10 | Not used | ||
| 11 | A | Signal Negative activation | Navigation computer |
| 12 | E | Signal, telephone AF - | Telephone speaker |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | E | Signal, antenna reception | Antenna amplifier or antenna diversity |