| Number | X-pin, colour | Description |
|---|---|---|
| X13321 | 12-pin, natural | Plug connector N9 Radio/Top Hifi |
| X18126 | 8-pin, black | Plug connector N9 Radio/Top Hifi |
| X18805 | 8-pin, black | Plug connector N9 Radio/Top Hifi |
| X01114 | 1-pin, metal | Plug connector N9 Radio/Top Hifi |
| X01115 | 1-pin, metal | Plug connector N9 Radio/Top Hifi |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | Not used | ||
| 2 | M | Ground Audio frequency | CD changer |
| 3 | Not used | ||
| 4 | Not used | ||
| 5 | Not used | ||
| 6 | Not used | ||
| 7 | Not used | ||
| 8 | A | Signal Audio frequency left | CD changer |
| 9 | A | Signal Audio frequency right | CD changer |
| 10 | Not used | ||
| 11 | Not used | ||
| 12 | Not used | ||
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 9 | E/A | I/K-bus signal link | Connector, I/K-bus |
| 10 | E | Telephone mute signal | Transceiver/charging electronics Basic interface, telephone |
| 11 | Not used | ||
| 12 | M | Radio ground | Ground point |
| 13 | E | Antenna supply | Amplifier (Top Hifi) Antenna amplifier Diversity |
| 14 | E | Night light signal | Light module |
| 15 | E | Terminal 30 | Fuse F72 |
| 16 | E | Voltage supply terminal R | Unloader relay terminal R |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | Not used | ||
| 2 | A | Positive activation, front right loudspeaker | Amplifier (Top Hifi) |
| 3 | A | Positive activation, front left loudspeaker | Amplifier (Top Hifi) |
| 4 | Not used | ||
| 5 | Not used | ||
| 6 | A | Negative activation, front right loudspeaker | Amplifier (Top Hifi) |
| 7 | A | Negative activation, front left loudspeaker | Amplifier (Top Hifi) |
| 8 | Not used | ||
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | E | Antenna signal | Diversity Japan VICS receiver |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | E | Antenna signal | Diversity |