1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your Hyojum Double Din Car Stereo. Please read this manual thoroughly before using the product to ensure proper function and safety. Keep this manual for future reference.
2. Product Features
- Wireless Apple CarPlay & Android Auto: Seamless integration with your smartphone for navigation, music, calls, and more.
- 7-Inch LCD Touchscreen: Responsive and clear display for intuitive control.
- Type-C Fast Charge: Convenient and rapid charging for compatible devices.
- Bluetooth 5.0: Stable wireless connection for hands-free calling and audio streaming.
- Mirror-Link Function: Display your smartphone screen directly on the stereo.
- Waterproof Backup Camera: Enhances safety with a clear rear view when reversing.
- Digital FM Radio: Access to local radio stations.
- Steering Wheel Control Support: Compatible with existing steering wheel controls for added convenience.
3. Setup and Installation
Professional installation is recommended. Ensure the vehicle's power is disconnected before beginning installation.
3.1 Package Contents
Verify all components are present before installation:

3.2 Wiring Connections
Connect the wiring harness to your vehicle's electrical system. Ensure correct connections for power (constant 12V, accessory 12V), ground, speaker outputs, and the reverse trigger wire for the backup camera. Refer to your vehicle's wiring diagram for specific wire functions.
3.3 Backup Camera Installation
Install the waterproof backup camera at the rear of your vehicle. Connect the camera's video output to the stereo's 'CAM IN' input and the power wire to the vehicle's reverse light circuit. This ensures the camera activates automatically when the vehicle is in reverse gear.
3.4 Steering Wheel Control Connection
If your vehicle supports steering wheel controls, connect the appropriate wires from the stereo harness to your vehicle's steering wheel control interface. Configuration may be required in the stereo's settings menu.
4. Operating Instructions
4.1 Power On/Off
Turn the vehicle ignition to the ACC or ON position. The stereo will power on automatically. To turn off, turn the vehicle ignition to the OFF position.
4.2 Wireless Apple CarPlay
To use Wireless Apple CarPlay, ensure Bluetooth and Wi-Fi are enabled on your iPhone. Pair your iPhone with the stereo via Bluetooth. Once paired, select the CarPlay icon on the stereo's main menu. Your iPhone's interface will appear on the stereo screen, allowing access to navigation, music, messages, and more.

4.3 Wireless Android Auto
For Wireless Android Auto, activate Bluetooth and Wi-Fi on your Android phone. Pair your phone with the stereo via Bluetooth. Select the Android Auto icon from the stereo's main menu. Your Android phone's compatible apps will be accessible on the stereo display.

4.4 Bluetooth Functionality
Access the Bluetooth menu to pair your smartphone. Once paired, you can make and receive hands-free calls, stream audio, and manage contacts directly from the stereo's touchscreen.

4.5 Mirror-Link
Connect your smartphone to the stereo using a USB cable. Select the Mirror-Link option from the main menu. Your phone's screen will be mirrored onto the stereo display, allowing you to view videos, photos, or use apps directly from the stereo.

4.6 Digital FM Radio
Navigate to the Radio function. Use the touchscreen controls to scan for stations, manually tune, or save your favorite frequencies as presets. The frequency range is typically 87.5 MHz to 108.0 MHz.

4.7 Backup Camera Display
When the vehicle is shifted into reverse gear, the stereo will automatically switch to the backup camera view. The display includes dynamic guidelines to assist with parking and maneuvering. The camera offers a 170-degree viewing angle and night vision capabilities.

4.8 Steering Wheel Controls
Access the 'Wheel' settings in the stereo's menu to configure your steering wheel controls. Follow the on-screen instructions to map your vehicle's steering wheel buttons to the stereo's functions (e.g., volume up/down, track skip, mode).

4.9 General Settings and Customization
The stereo offers various settings for customization, including display brightness, contrast, saturation, equalizer (EQ) settings, wallpaper selection, and language options. Navigate through the 'Setup' menu to adjust these preferences.
5. Maintenance
- Cleaning the Screen: Use a soft, lint-free cloth to gently wipe the touchscreen. Avoid abrasive cleaners or solvents.
- Software Updates: Periodically check the manufacturer's website for any available software updates to ensure optimal performance and access to new features.
- General Care: Avoid exposing the unit to extreme temperatures, direct sunlight for prolonged periods, or excessive moisture.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power to the unit. | Incorrect wiring, blown fuse, vehicle ignition off. | Check power and ground connections. Inspect vehicle fuses. Ensure ignition is in ACC or ON position. |
| No sound from speakers. | Speaker wires incorrectly connected, volume too low, mute activated. | Verify speaker wiring. Increase volume. Check if mute function is active. |
| CarPlay/Android Auto not connecting wirelessly. | Bluetooth/Wi-Fi off on phone, incorrect pairing, phone not compatible. | Ensure Bluetooth and Wi-Fi are active on your phone. Re-pair the device. Check phone compatibility. |
| Backup camera not displaying. | Camera power issue, video cable disconnected, reverse trigger wire not connected. | Check camera power and video cable connections. Ensure the reverse trigger wire is correctly connected to the vehicle's reverse light circuit. |
| Touchscreen unresponsive or inaccurate. | Screen calibration needed, physical damage. | Access the 'Touch Calibration' setting in the menu and recalibrate the screen. If issues persist, contact support. |
7. Specifications
- Model: B0C6TGSJPW (also referred to as 7035W)
- Display: 7-inch LCD Touchscreen
- Connectivity: Wireless Apple CarPlay, Wireless Android Auto, Bluetooth 5.0, USB, Mirror-Link
- Charging: Type-C Fast Charge
- Audio Output Mode: Stereo
- Output Power: 240 Watts
- Output Wattage: 180 Watts
- Number of Channels: 2
- Control Method: Touch
- Item Weight: 1.83 pounds
- Package Dimensions: 8.03 x 6.73 x 4.57 inches
8. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the warranty card included with your product or contact Hyojum customer service directly. Keep your purchase receipt as proof of purchase.