Wiring Diagram SKODA OCTAVIA II 2005 - Radio navigation system control unit - aerial - E box
| J503 | Radio navigation system control unit |
| R50 | Navigation aerial (GPS) |
| R51 | Radio/telephone/auxiliary heater aerial |
| R54 | Mobile telephone |
| S258 | Radio navigation system fuse |
| SB19 | Fuse -19-, in the E box |
| T8c | 8-pin connector, on the radio navigation system control unit (black) |
| T40a | 40-pin connector, at the E box |
| 377 | Earth connection -12-, in interior wiring harness |
| 610 | Earth point (audio), front below centre console |
| B320 | Positive connection -6- (30a), in interior wiring harness |
| * | Navigation system aerial cable |
| ** | Radio aerial cable |
| *** | Telephone aerial cable |
| only for vehicles with CD changer |
Wiring Diagram SKODA OCTAVIA II 2005 - Radio navigation system control unit - front loudspeaker
| J412 | Mobile telephone operating electronics control unit (interface box), under front passenger seat |
| J503 | Radio navigation system control unit |
| R20 | Treble loudspeaker, front left |
| R21 | Bass loudspeaker, front left |
| R22 | Treble loudspeaker, front right |
| R23 | Bass loudspeaker, front right |
| T2l | 2-pin connector, at treble loudspeaker, front left |
| T2m | 2-pin connector, at treble loudspeaker, front right |
| T4g | 4-pin connector, at bass loudspeaker, front left |
| T4h | 4-pin connector, at bass loudspeaker, front right |
| T8d | 8-pin connector, on the radio navigation system control unit (brown) |
| T8e | 8-pin connector, on left A-pillar (black) |
| T8f | 8-pin connector, on right A-pillar (black) |
| T12u | 12-pin connector, on the radio navigation system control unit (green) |
| T54a | 54-pin connector, at mobile telephone operating electronics control unit (interface box) |
| only for vehicles with telephone system |
Wiring Diagram SKODA OCTAVIA II 2005 - Radio navigation system control unit - rear loudspeaker
| J503 | Radio navigation system control unit |
| R14 | Treble loudspeaker, rear left |
| R15 | Bass loudspeaker, rear left |
| R16 | Treble loudspeaker, rear right |
| R17 | Bass loudspeaker, rear right |
| T2n | 2-pin connector, at treble loudspeaker, rear left |
| T2o | 2-pin connector, at treble loudspeaker, rear right |
| T4j | 4-pin connector, at bass loudspeaker, rear left |
| T4k | 4-pin connector, at bass loudspeaker, rear right |
| T8d | 8-pin connector, on the radio navigation system control unit (brown) |
| T8g | 8-pin connector, on left B-pillar (black) |
| T8h | 8-pin connector, on right B-pillar (black) |
| * | only for vehicles with 8 loudspeakers |
Wiring Diagram SKODA OCTAVIA II 2005 - Radio navigation system control unit - CD changer
| J503 | Radio navigation system control unit |
| R41 | CD changer |
| T12f | 12-pin connector, on the radio navigation system control unit (blue) |
| T12g | 12-pin connector, at CD changer |
| A19 | Connection (58d), in dash panel wiring harness |
| V14 | Connection (screening), in CD changer wiring harness |
| V45 | Connection -2- (screening), in CD changer wiring harness |
| * | not valid as of 05.04 |
| only for vehicles with CD changer |
Wiring Diagram SKODA OCTAVIA II 2005 - Radio navigation system control unit - data bus diagnostic interface - dash panel insert
| J119 | Multi-function display |
| J285 | Control unit in dash panel insert |
| J503 | Radio navigation system control unit |
| J533 | Data bus diagnostic interface, below dash panel, centre |
| K | Dash panel insert |
| T8c | 8-pin connector, on the radio navigation system control unit (black) |
| T20c | 20-pin connector, at data bus diagnostic interface |
| T36a | 36-pin connector, at dash panel insert |
| A178 | Connection (CAN H, infotainment), in dash panel insert wiring harness |
| A179 | Connection (CAN L, infotainment), in dash panel insert wiring harness |
| B506 | Connection (CAN H, dash panel insert), in interior wiring harness |
| B507 | Connection (CAN L, dash panel insert), in interior wiring harness |
| * | not valid as of 05.04 |
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