Carav 12-025 ISO Adapter Pinout for AUDI SEAT SKODA VOLKSWAGEN
Why Do You Need the Carav 12-025 ISO Adapter?
When replacing a factory head unit, VAG vehicle owners face wiring harness incompatibility. The stock wiring in AUDI, SEAT, SKODA, and VOLKSWAGEN (2002+) models utilizes a proprietary Quadlock (Fakra) connector, while most aftermarket multimedia systems (1DIN, 2DIN, and 9″ or 10.1″ Android head units) feature a universal ISO euro-connector.
Carav 12-025 ISO Adapter Pinout for AUDI SEAT SKODA VOLKSWAGEN adapter bridges this gap, acting as a direct link between the car’s electrical system and the new head unit.
Key Benefits of Using Carav 12-025 ISO Adapter Pinout for AUDI SEAT SKODA VOLKSWAGEN
- Warranty Retention: Installation requires zero modification to the factory wiring. There is no need to cut, strip, or splice wires, preventing warranty claims from official dealerships.
- System Safety: Pre-assembled and pinned under factory conditions, minimizing the risks of reverse polarity, short circuits, or vehicle electrical system faults.
- Plug-and-Play Installation: The complete connection process takes less than 10 minutes. The factory radio can be easily reinstalled at any time (e.g., when selling the vehicle).
Vehicle Compatibility (2002+)
This harness adapter is engineered specifically for VAG group vehicles from the 2002 model year onward:
| Vehicle Make | Production Period | Factory Connector Type |
|---|---|---|
| Carav 12-025 ISO Adapter Pinout for AUDI | 2002 + | Quadlock (Fakra) |
| Carav 12-025 ISO Adapter Pinout for SEAT | 2002 + | Quadlock (Fakra) |
| Carav 12-025 ISO Adapter Pinout for SKODA | 2002 + | Quadlock (Fakra) |
| Carav 12-025 ISO Adapter Pinout for VOLKSWAGEN | 2002 + | Quadlock (Fakra) |
Carav 12-025 ISO Adapter Pinout for AUDI SEAT SKODA VOLKSWAGEN Configuration
The adapter block is divided into two distinct functional sections: Connector A (power, grounding, and control lines) and Connector B (acoustic outputs). The wiring configuration follows the standardized ISO rules.
Block A: Speaker Connections (Acoustic Connector)
Block B: Power and Service Functions (Power Connector)
| ISO Adapter | Pin | Wire Color | Signal |
| Carav 12-025 | 1 | Violet | Speaker Right Rear (+) |
| Carav 12-025 | 2 | Violet / Black | Speaker Right Rear (-) |
| Carav 12-025 | 3 | Grey | Speaker Right Front (+) |
| Carav 12-025 | 4 | Grey / Black | Speaker Right Front (-) |
| Carav 12-025 | 5 | White | Speaker Left Front (+) |
| Carav 12-025 | 6 | White / Black | Speaker Left Front (-) |
| Carav 12-025 | 7 | Green | Speaker Left Rear (+) |
| Carav 12-025 | 8 | Green / Black | Speaker Left Rear (-) |
| Carav 12-025 | 9 | Yellow | +12V to Battery |
| Carav 12-025 | 10 | Blue | +12V to Automatic Antenna |
| Carav 12-025 | 12 | Red | +12V to Ignition (ACC power ON) |
| Carav 12-025 | 13 | Black | GROUND (-) |
Technical Note: In post-2002 VAG vehicles, the ACC (Ignition) and Illumination signals are typically managed via the digital CAN-bus network. Because the Carav 12-025 is a straight-wire pass-through adapter, establishing a key-operated power supply may require routing a dedicated ACC wire to the vehicle’s fuse box (Terminal 15) or integrating an auxiliary CAN-bus decoder module.