| Multiple connector 4, 12-pin, for CD changer control and the input signals from CD audio |
| 1 - | AUX signal input, left |
| 3 - | CD changer, earth audio signal, earth |
| 4 - | CD changer, voltage supply, positive, terminal 30, permanent load supportable by contact greater than 1A, peak short duration load supportable 5A |
| 6 - | CD changer, DATA OUT (exchange data between radio navigation system and CD changer for controlling changer) |
| 7 - | AUX signal input, right |
| 8 - | CD changer, left audio channel, CD/L |
| 9 - | CD changer, right audio channel, CD/R |
| 10 - | CD changer, control line, switched positive |
| 11 - | CD changer, DATA IN (exchange data between radio navigation system and CD changer for controlling CD changer) |
| 12 - | CD changer, CLOCK (internal verification protocol for testing data exchange) |
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