Wiring Diagram SKODA OCTAVIA II 2012 - Multimedia system control unit - data bus diagnostic interface

| J503 | Radio navigation system control unit |
| J519 | Onboard power supply control unit |
| J533 | Data bus diagnostic interface, below dash panel |
| J650 | Multimedia system control unit, behind dash panel |
| R | Radio |
| R41 | CD changer |
| T12f | 12-pin connector, on the radio or on the radio navigation system control unit (blue) |
| T12g | 12-pin connector, at CD changer |
| T12v | 12-pin connector, at multimedia system control unit |
| T20c | 20-pin connector, at data bus diagnostic interface |
| 377 | Earth connection -12-, in interior wiring harness |
| 610 | Earth point (audio), front below centre console |
| A46 | Positive connection (30, from radio), in dash panel wiring harness |
| A178 | Connection (CAN H, infotainment), in dash panel insert wiring harness |
| A179 | Connection (CAN L, infotainment), in dash panel insert wiring harness |
| * | only for vehicles with CD changer |
Wiring Diagram SKODA OCTAVIA II 2012 - Multimedia system control unit - connection for external audio sources
| J519 | Onboard power supply control unit |
| J650 | Multimedia system control unit, behind dash panel |
| R199 | Connection for external audio sources |
| T4l | 4-pin connector, at fresh air blower series resistor |
| T12v | 12-pin connector, at multimedia system control unit |
| T30a | 30-pin connector, preinstallation of connector socket Mitsumi for MEDIA-IN |
| 346 | Earth connection (audio), in dash panel wiring harness |
| * | Optional equipement |
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