KUNFINE MP13 Interface
Yatour Car Digital Music Changer User Manual
Model: MP13 Interface
Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your KUNFINE Yatour Car Digital Music Changer. This device serves as a replacement for a traditional CD changer, allowing you to play audio from USB drives, SD cards, and external auxiliary sources through your car's audio system.
The unit is designed for seamless integration with your vehicle's head unit and supports steering wheel controls where applicable. It connects via a wire harness, ensuring high-fidelity audio transmission without reliance on FM signals.
Package Contents
Please verify that all items are present before proceeding with installation:
- Yatour Digital Music Changer Unit
- Connection Cable (with D-sub 8-pin connector and white multi-pin car stereo connector)
- 3.5mm Auxiliary Audio Cable
- User Manual (this document)

Image: The Yatour Digital Music Changer unit, its main connection cable, a 3.5mm auxiliary audio cable, and the product manual are displayed on a white background.
Setup and Installation
Important: Before beginning installation, ensure your vehicle's ignition is off and the battery is disconnected to prevent electrical damage.
- Access Car Stereo: Carefully remove your car's head unit (stereo) from the dashboard. Refer to your vehicle's service manual for specific instructions on how to safely remove the stereo.
- Locate CD Changer Port: Identify the CD changer port on the back of your car stereo. This is typically a multi-pin connector.
- Connect Yatour Unit: Plug the white multi-pin connector of the Yatour connection cable into the CD changer port on your car stereo. Ensure a secure connection.

Image: A close-up view of the white multi-pin connector, which connects to the car stereo's CD changer port.
- Connect to Yatour Module: Connect the D-sub 8-pin connector from the cable to the corresponding port on the Yatour Digital Music Changer module.

Image: The Yatour Digital Music Changer module is shown connected to its main cable via the D-sub 8-pin connector.
- Route Cables: Carefully route the cables to ensure they are not pinched or damaged when the stereo is reinstalled.
- Secure Yatour Module: Find a suitable, secure location for the Yatour module within the dashboard or glove compartment, ensuring it does not interfere with vehicle operation.
- Reinstall Stereo: Reinstall your car stereo into the dashboard.
- Reconnect Battery: Reconnect your vehicle's battery.
Operating Instructions
The Yatour Digital Music Changer operates by emulating a CD changer. To use it, select the CD changer mode on your car stereo.
USB/SD Card Playback:
- Insert a USB flash drive or SD card into the corresponding slot on the Yatour module. Ensure your audio files (MP3, WMA, etc.) are organized in folders (e.g., CD01, CD02) to mimic CD discs.
- Select the CD changer source on your car stereo. The Yatour unit will automatically detect and begin playing music from the first folder/track.
- Use your car stereo's track forward/backward buttons to navigate between songs. Use the disc selection buttons (if available) to switch between folders (virtual CDs).
Auxiliary Input Playback:
- Connect an external audio device (e.g., smartphone, MP3 player) to the 3.5mm AUX input port on the Yatour module using the provided auxiliary cable.
- Select the AUX source on your car stereo (this may be labeled as CD changer or a specific AUX input depending on your stereo model).
- Control playback (play, pause, skip) directly from your connected external audio device.
Bluetooth (Optional):
If your Yatour unit includes the optional Bluetooth module, follow these steps:
- Ensure the Bluetooth module is connected to the Yatour unit.
- Turn on Bluetooth on your mobile device and search for available devices.
- Select "Yatour" or a similar name from the list to pair.
- Once paired, audio from your mobile device will stream through the car stereo when the Yatour unit is selected as the source.
Maintenance
The Yatour Digital Music Changer requires minimal maintenance. Follow these guidelines to ensure optimal performance and longevity:
- Cleaning: Use a soft, dry cloth to wipe the exterior of the unit. Do not use liquid cleaners or solvents, as they may damage the device.
- Connections: Periodically check all cable connections to ensure they are secure and free from corrosion.
- Storage Media: Ensure USB drives and SD cards are clean and free of dust or debris before insertion. Safely eject media when not in use.
- Environment: Avoid exposing the unit to extreme temperatures, direct sunlight, or excessive moisture.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No audio output. | Incorrect source selected on car stereo. Loose cable connection. Incompatible audio file format. | Ensure "CD Changer" or "AUX" mode is selected. Check all connections, especially to the car stereo and Yatour module. Verify audio files are in supported formats (e.g., MP3, WMA). |
| Unit not recognized by car stereo. | Improper installation. Vehicle battery not reconnected. Firmware incompatibility. | Review installation steps, ensuring all cables are correctly seated. Confirm vehicle battery is fully reconnected. Contact KUNFINE support for firmware compatibility information if issues persist. |
| USB/SD card not reading. | Improperly formatted media. Corrupt files. Media capacity too large. | Ensure media is formatted to FAT32. Try different USB/SD card. Check manual for maximum supported media capacity. |
| Bluetooth not pairing (if applicable). | Bluetooth module not connected. Device not in pairing mode. | Verify Bluetooth module is securely connected to the Yatour unit. Ensure your mobile device's Bluetooth is on and discoverable. |
Specifications
| Feature | Detail |
|---|---|
| Model | MP13 Interface |
| Brand | KUNFINE (Yatour) |
| Connectivity | USB, SD Card, 3.5mm AUX, Bluetooth (Optional) |
| Supported Audio Formats | MP3, WMA (check specific model for full list) |
| Control | Vehicle Head Unit, Steering Wheel Controls |
| Weight | Approximately 1.1 pounds (0.5 kg) |
| Package Dimensions | 6.3 x 5.91 x 3.94 inches (16 x 15 x 10 cm) |
Warranty Information
This product is typically covered by a manufacturer's warranty. For specific warranty terms and conditions, please refer to the documentation provided with your purchase or contact the seller directly. Keep your proof of purchase for warranty claims.
Protection plans may also be available for extended coverage. For details on available protection plans, please refer to your purchase receipt or the product listing where you acquired the device.
Customer Support
For technical assistance, installation queries, or troubleshooting beyond the scope of this manual, please contact KUNFINE customer support or the retailer from whom you purchased the product.
When contacting support, please have your product model (MP13 Interface) and purchase details ready.
Manufacturer: WOSTOKE
Ask a question about this manual
Ask about setup, troubleshooting, compatibility, parts, safety, or missing instructions. Manuals+ will review the question and use this page’s manual context to help answer it.