| Pin assignment multi-pin connector “2” |
| 1 - | Pre-amplifier output, audio signal, rear left |
| 2 - | Pre-amplifier output, audio signal, rear right |
| 3 - | Pre-amplifier output, audio signal, negative |
| 4 - | Pre-amplifier output, audio signal, front left |
| 5 - | Pre-amplifier output, audio signal, front right |
| 6 - | Switched positive, output (up to max. 300 mA) |
| 7 - | Audio signal telephone, positive input |
| 8 - | Audio signal telephone, negative input |
| 9 - | Radio mute for telephone |
| 10 - | Switched positive, output (up to max. 300 mA) |
| 11 - | Remote control input signal, positive |
| 12 - | Remote control input signal, negative |
| 13 - | CD changer DATA IN, CD changer control |
| 14 - | CD changer DATA OUT, CD changer control |
| 15 - | Permanent voltage supply, positive |
| 16 - | Switched positive, output (up to max. 300 mA) |
| 17 - | CD changer DATA, negative, CD changer control |
| 18 - | CD changer audio input signal, negative |
| 19 - | CD changer left audio input signal, positive |
| 20 - | CD changer right audio input signal, positive |
| It is not possible to operate a CD changer and sound amplifier with the radio navigation system “DX-R4”. |
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