| Multi-pin connector 4, 12-pin, for CD changer control and CD audio input signals |
| 1 - | AUX signal input, left |
| 3 - | CD changer, audio signal earth |
| 4 - | CD changer, voltage supply, positive, terminal 30, contact continuous load greater than 1 A, temporary peak load 5 A |
| 6 - | CD changer, DATA OUT (data exchange for CD changer control from radio navigation system to CD 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 (data exchange for CD changer control from CD changer to radio navigation system) |
| 12 - | CD changer, CLOCK (internal check protocol for data flow monitoring) |
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