1. Introdución
This instruction manual provides comprehensive guidance for the safe and correct installation of the Connects2 CT20VX04 Harness Adapter. This adapter is designed to facilitate the installation of an aftermarket car stereo into specific Vauxhall vehicles, ensuring proper power, speaker, and antenna connections, including phantom power for the original Fakra antenna system.
2. Información de seguridade
- Always disconnect the vehicle's negative battery terminal before beginning any electrical installation to prevent short circuits and electrical damage.
- Ensure all connections are secure and properly insulated to avoid electrical shorts.
- Se tes algunha dúbida sobre calquera parte do proceso de instalación, consulta cun electricista de automóbiles cualificado.
- Do not modify the harness adapter. Unauthorized modifications can lead to malfunction or damage.
- Manteña o produto lonxe da humidade e das temperaturas extremas.
3. Contido do paquete
Please verify that all components are present before proceeding with the installation:
- Connects2 CT20VX04 Harness Adapter (Main Unit)
- Fakra Antenna Adapter with Phantom Power Supply
- Vehicle-Specific ISO Connector

Figura 1: The Connects2 CT20VX04 Harness Adapter. This image displays the primary wiring loom, including the vehicle-specific ISO connector for power and speakers, and the Fakra antenna adapter with its integrated phantom power supply.
4. Compatibilidade
The Connects2 CT20VX04 Harness Adapter is compatible with the following Vauxhall vehicle models from 2004 onwards:
- Vauxhall Astra H (2004 onwards)
- Vauxhall Corsa C (2004 onwards)
- Vauxhall Vectra C (2004 onwards)
- Vauxhall Tigra (2004 onwards)
Nota: Vehicle compatibility may vary based on specific trim levels or factory-fitted options. Always verify the existing wiring harness in your vehicle matches the adapter's connectors before installation.
5. Configuración e instalación
Follow these steps carefully to install the harness adapter:
- Preparar o vehículo: Ensure the vehicle's ignition is off. Disconnect the negative terminal of the car battery to prevent electrical shorts during installation.
- Eliminar a unidade principal existente: Carefully remove the factory-fitted car stereo from the dashboard. Refer to your vehicle's service manual for specific removal instructions.
- Connect Power/Speaker Harness: Locate the vehicle's factory wiring harness. Connect the vehicle-specific ISO connector from the CT20VX04 adapter to the corresponding connector in your vehicle. Ensure a firm and secure connection.
- Conectar o adaptador de antena: Locate the vehicle's Fakra antenna connector. Connect the Fakra antenna adapter from the CT20VX04 to the vehicle's antenna cable. The adapter includes a phantom power supply, which is essential for active (amplified) factory antennas to function correctly with an aftermarket head unit.
- Conectar á unidade principal do mercado de accesorios: Connect the ISO and DIN antenna connectors from the CT20VX04 adapter to the corresponding ports on your new aftermarket car stereo.
- Proba de conexións: Before fully reassembling the dashboard, reconnect the vehicle's negative battery terminal. Turn on the ignition and test the new head unit's functionality, including power, audio output from all speakers, and radio reception.
- Asegurar e volver montar: Once all functions are verified, disconnect the battery again. Secure all wiring to prevent rattles or damage. Carefully reinstall the aftermarket head unit and reassemble the dashboard components. Reconnect the battery.
6. Instrucións de funcionamento
The Connects2 CT20VX04 Harness Adapter is a passive component designed to facilitate the connection of an aftermarket head unit. Once correctly installed, its operation is integrated with the functionality of your new car stereo. Refer to your aftermarket head unit's instruction manual for specific operating procedures.
7. Mantemento
The CT20VX04 Harness Adapter requires minimal maintenance. Periodically, if you experience issues, you may:
- Check all connections for tightness and corrosion.
- Ensure wiring is not pinched or damaged.
No user-serviceable parts are contained within the adapter. Do not attempt to open or repair the unit.
8 Solución de problemas
| Problema | Causa posible | Solución |
|---|---|---|
| No power to aftermarket head unit. |
|
|
| Non hai son dos altofalantes. |
|
|
| Recepción de radio deficiente ou nula. |
|
|
9. Especificacións
| Número de modelo | CT20VX04 |
| Marca | Conecta2 |
| Compatibilidade | Vauxhall Astra H, Corsa C, Vectra C, Tigra (2004 onwards) |
| Tipo de conector | Vehicle-specific ISO, Fakra Antenna, DIN Antenna |
| Material | Acrilonitrilo Butadieno Estireno (ABS) |
| Peso do elemento | 3.88 onzas (110 gramos) |
| Dimensións do paquete | 11.81 x 5.39 x 2.01 polgadas |
10. Garantía e soporte
Connects2 products are designed for reliability and performance. For warranty information or technical support, please refer to the official Connects2 websitio web ou póñase en contacto co seu distribuidor autorizado. Garde o comprobante de compra para calquera reclamación de garantía.





