1. Introduction
This manual provides instructions for the installation and operation of your MEKEDE Car Radio Connector Harness Cable Adapter with Canbus. This product is designed to facilitate the connection of an aftermarket car radio to your vehicle's electrical system, integrating essential functions such as power, speakers, and Canbus data for features like steering wheel controls and reverse detection.
Please read this manual carefully before installation to ensure correct setup and optimal performance.
2. Package Contents
- MEKEDE Car Radio Connector Harness
- Canbus Decoder Module
- 40Pin Quadlock Connector
- Antenna Adapter (if included in your specific package)
Figure 1: Complete Harness Assembly
3. Compatibility
This harness is designed for use with various VW, Skoda, and SEAT car models. Please verify your vehicle's compatibility before installation.
Figure 2: Canbus Decoder Module with Compatibility Information
Note: The Canbus decoder module (P/N: G-RZ-VW58) is generally compatible with VW, Skoda, and SEAT cars. However, it is not fully compatible with the following specific models:
- 2008-2010 Lavida
- 2011-2017 Touareg
- 2003-2010 Touareg
4. Setup and Installation
Professional installation is recommended. Disconnect the vehicle's battery before beginning any electrical work.
4.1 Identifying Connectors
The harness features a 40Pin Quadlock connector designed to interface with your vehicle's existing wiring and an aftermarket head unit.
Figure 3: Harness with 40Pin Quadlock Connector
Figure 4: Detailed View of 40Pin Quadlock
4.2 Wiring Diagram (P1 Connector)
Refer to the following diagram for the pin assignments of the P1 connector. Ensure all connections are secure and match the corresponding wires on your aftermarket radio.
Figure 5: P1 Connector Wiring Diagram
| Pin No. | Function | Pin No. | Function |
|---|---|---|---|
| A1 | GND | A2 | B+ |
| A3 | ACC Key Switch | A4 | ILL small lights detecting |
| A5 | Reverse detecting line | A6 | Steering wheel control study -2 |
| A7 | Steering wheel control study-1 | A8 | ANT power |
| A9 | Speaker Front Right FR- | A10 | Speaker Rear Left RL- |
| A11 | Speaker Front Right FR+ | A12 | Speaker Rear Left RL+ |
| A13 | Speaker Front Left FL- | A14 | Speaker Rear Right RR+ |
| A15 | Speaker Front Left FL+ | A16 | Speaker Rear Right RR- |
Note: The diagram above details the pin functions for the P1 connector. Match these to your car radio's wiring harness.
4.3 Canbus Decoder Connection
The Canbus decoder module (Figure 2) connects inline with the main harness. This module translates vehicle data (e.g., steering wheel controls, ignition status, reverse signal) into a format usable by your aftermarket radio. Ensure it is securely connected to the designated ports on the harness.
Figure 6: Canbus Decoder Module
5. Operating Instructions
Once the harness and Canbus decoder are correctly installed and connected to your aftermarket car radio, the system should operate automatically.
- Power: The harness provides constant and accessory power to your radio.
- Speakers: Audio signals are routed to your vehicle's speakers.
- Steering Wheel Controls: The Canbus decoder translates signals from your vehicle's steering wheel controls to your radio, allowing you to manage volume, tracks, and other functions (radio must support SWC and be configured).
- Reverse Signal: The Canbus decoder provides a reverse signal to your radio, which is essential for activating a reverse camera display (if installed and supported by your radio).
- Illumination: The harness provides an illumination signal for dimming the radio's display with your vehicle's headlights.
Refer to your aftermarket car radio's user manual for specific instructions on configuring steering wheel controls and other Canbus-related features.
6. Maintenance
The MEKEDE Car Radio Connector Harness is designed for durability and requires minimal maintenance.
- Ensure all connections remain secure and free from corrosion.
- Keep the harness and Canbus module away from excessive moisture or extreme temperatures.
- Avoid pulling on the wires forcefully, as this can damage the connections.
7. Troubleshooting
7.1 No Power to Radio
- Check the main power (B+) and ground (GND) connections on the harness.
- Verify the ACC (Accessory) wire is receiving power when the ignition is on.
- Inspect vehicle fuses related to the radio and accessory power.
7.2 No Sound from Speakers
- Ensure all speaker wires (FL+, FL-, FR+, FR-, RL+, RL-, RR+, RR-) are correctly connected to the radio and not shorted.
- Check the radio's audio settings and amplifier connections (if applicable).
7.3 Steering Wheel Controls Not Working
- Confirm the Canbus decoder module is correctly connected and functioning.
- Check the 'Steering wheel control study-1' and 'Steering wheel control study-2' wires.
- Ensure your aftermarket radio supports steering wheel controls and is properly configured in its settings.
7.4 Reverse Camera Not Activating
- Verify the 'Reverse detecting line' (A5) is correctly connected to your radio's reverse input.
- Ensure the reverse camera itself is powered and connected correctly.
8. Specifications
| Feature | Detail |
|---|---|
| Product Type | Car Radio Connector Harness Cable Adapter with Canbus |
| Brand | MEKEDE |
| Origin | Mainland China |
| Connector Type | 40Pin Quadlock |
| Canbus Decoder Model | G-RZ-VW58 |
| Compatibility | VW, Skoda, SEAT cars (Excluding 2008-2010 Lavida, 2011-2017 Touareg, 2003-2010 Touareg) |
| Package Length | 16 cm |
| Package Width | 15 cm |
| Package Height | 4 cm |
| Package Weight | 0.095 kg |
9. User Tips
- Always double-check your vehicle's specific wiring diagram against the provided harness diagram before making any connections. Vehicle models can have variations.
- When connecting the Canbus decoder, ensure it clicks firmly into place. A loose connection can lead to intermittent functionality of steering wheel controls or other features.
- After installation, test all functions (radio power, sound, steering wheel controls, reverse camera, illumination) before fully reassembling your dashboard.
10. Warranty and Support
For detailed guides and further assistance, you may refer to the official user manual PDF:
If you encounter any issues not covered in this manual or require technical support, please contact MEKEDE customer service through your purchase platform.