1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your PLZ 7-inch QLED Wireless Double Din Car Stereo. Please read this manual thoroughly before using the product to ensure proper function and safety.
1.1. Package Contents
Verify that all items listed below are included in your package:
- Car Stereo Unit
- Mounting Frames
- Backup Camera
- Remote Control
- Installation Wiring Harness
- Mounting Brackets
- Disassembly Tool
- Screws (various sizes)
- User Manual

Figure 1.1: Included Package Contents
2. Safety Information
- Always operate the device safely and responsibly. Distracted driving is dangerous and illegal in many areas.
- Do not attempt to install or service this product if you are not qualified. Professional installation is recommended.
- Ensure all wiring connections are secure and properly insulated to prevent short circuits and electrical hazards.
- Avoid exposing the unit to extreme temperatures, direct sunlight for prolonged periods, or excessive moisture.
- Only use the provided accessories and wiring harnesses.
- For optimal safety, video playback is restricted while the vehicle is in motion.
3. Setup and Installation
Proper installation is crucial for the performance and longevity of your car stereo. It is highly recommended to have this unit installed by a professional car audio technician.
3.1. Pre-Installation Checks
- Verify your dashboard opening size matches the stereo dimensions (7 inches, double DIN). Additional dash kits may be required for specific car models.
- Some car models may require a separate wire harness adapter and radio antenna adapter.
- Disconnect the vehicle's battery before beginning installation.
3.2. Wiring Diagram
Refer to the detailed wiring diagram below for correct connections. Ensure each wire is connected to its corresponding function in your vehicle's wiring harness.

Figure 3.1: Wiring Diagram and Unit Dimensions
3.3. Mounting the Unit
The stereo unit features multiple mounting holes for flexible installation and improved cooling. Secure the unit using the provided brackets and screws into your vehicle's dashboard opening.

Figure 3.2: Mounting Hole Design for Easy Installation
4. Operating Instructions
4.1. Wireless Apple CarPlay & Android Auto
Connect your compatible smartphone wirelessly to access navigation, music, calls, and other apps directly on the stereo's display. The system connects automatically upon vehicle startup.

Figure 4.1: Wireless Apple CarPlay and Android Auto Interface
Text Description of Video: This video demonstrates the key features of the PLZ 7-inch QLED Wireless Double Din Car Stereo. It highlights the easy installation process, the powerful smart chip and independent Bluetooth module for stable connectivity, and the comprehensive audio outputs including 4 channels pre-amplifier and 2 subwoofer outputs. The video also showcases the vibrant 1280x720 QLED touch screen, the seamless integration of wireless CarPlay and Android Auto, smart voice control capabilities, and support for steering wheel controls. Additionally, it illustrates FM/AM radio functionality, phone charging, wired mirror link, USB flash drive video playback, and the reversing image assistant. The video concludes by emphasizing the product's overall quality and features.
4.2. Voice Control
Utilize Siri or Google Assistant through your connected smartphone for hands-free operation of navigation, calls, and music playback. This feature enhances driving safety by allowing you to keep your hands on the wheel.
4.3. QLED Display
The 7-inch QLED display offers a resolution of 1280 x 720 pixels, providing clear visuals and supporting 1080P video playback. The full touch screen interface allows for intuitive control.

Figure 4.2: QLED Display Features
4.4. Bluetooth 5.3
The integrated Bluetooth 5.3 module with an external antenna ensures stable and efficient wireless connectivity for hands-free calling and audio streaming. The built-in microphone and external microphone interface provide clear communication.

Figure 4.3: Bluetooth 5.3 Connectivity
4.5. Audio Features
The stereo includes a Digital Signal Processor (DSP) with a 4.2 channel pre-amplifier (240W max output) and two subwoofer outputs. A 10-band EQ allows for precise audio customization. Adjust the sound field to optimize audio distribution within your vehicle.

Figure 4.4: Audio Output Configuration
4.6. Steering Wheel Control (SWC)
If your vehicle supports Steering Wheel Control, you can connect it to the stereo to manage volume, tracks, and voice commands directly from your steering wheel. An additional interface module may be required (not included).

Figure 4.5: Steering Wheel Control Setup
4.7. FM/AM Radio
Access FM and AM radio stations. The unit supports frequency ranges of FM: 87.5-107.9MHz and AM: 530-1710KHz. You can save your favorite stations as presets.

Figure 4.6: FM/AM Radio Interface
4.8. USB/TF Playback
Insert a USB flash drive or TF card into the designated port to play audio and video files. The unit supports various video encoding formats including MPEG-4, RMVB, DivX, AVI, 1080P, and audio formats like MP3, WMA, JPEG.

Figure 4.7: USB/TF Media Playback
4.9. Wired Mirror Link
Connect your smartphone via USB to mirror its screen onto the car stereo display. This allows you to view content from your phone, such as navigation or videos, on the larger screen.

Figure 4.8: Wired Mirror Link
4.10. Backup Camera
The included backup camera provides a clear view of the area behind your vehicle when reversing. It features high definition, night vision, a 170° viewing angle, and waterproof protection. The display automatically switches to the camera feed when reverse gear is engaged.

Figure 4.9: Backup Camera Features and View
5. Maintenance
- Cleaning the Screen: Use a soft, lint-free cloth to gently wipe the QLED screen. For stubborn smudges, slightly dampen the cloth with water or a screen-safe cleaner. Avoid harsh chemicals or abrasive materials.
- General Cleaning: Keep the unit free from dust and debris. Use a soft brush or compressed air to clean vents and button areas.
- Software Updates: Periodically check the manufacturer's website or contact support for any available software updates to ensure optimal performance and new features.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power/Unit does not turn on. | Incorrect wiring, blown fuse, vehicle battery issue. | Check power connections (ACC, B+), inspect fuses, ensure vehicle battery is charged. |
| No sound from speakers. | Speaker wires incorrectly connected, volume too low, mute activated, amplifier issue. | Verify speaker wiring, increase volume, check mute status, ensure external amplifier (if used) is powered. |
| Bluetooth connection issues. | Phone not in pairing mode, interference, unit not discoverable. | Ensure Bluetooth is enabled on both devices, restart both devices, try pairing again. |
| CarPlay/Android Auto not connecting wirelessly. | Wi-Fi/Bluetooth disabled on phone, incompatible phone, software glitch. | Ensure phone's Wi-Fi and Bluetooth are active. Restart phone and stereo. Check phone compatibility. |
| Backup camera not displaying. | Camera wiring incorrect, reverse trigger wire not connected, faulty camera. | Check camera power and video input connections. Ensure reverse trigger wire is correctly connected to the vehicle's reverse light circuit. |
| Steering Wheel Controls not working. | Incorrect wiring, no SWC interface, programming required. | Verify SWC wiring. Confirm if an additional SWC interface is needed for your vehicle. Follow the stereo's menu for SWC programming. |
7. Specifications
| Feature | Detail |
|---|---|
| Display Type | 7-inch QLED Touch Screen |
| Display Resolution | 1280 x 720 pixels |
| Connectivity | Wireless Apple CarPlay, Wireless Android Auto, Bluetooth 5.3, USB, Wired Mirror Link |
| Audio Output | 4.2 Channel Pre-Amplifier (240W Max), 2 Subwoofer Outputs |
| Equalizer | 10-band EQ |
| Radio Tuner | FM (87.5-107.9MHz), AM (530-1710KHz) |
| Video Encoding Support | MPEG-4, RMVB, DivX, AVI, 1080P |
| Audio Encoding Support | MP3, WMA, JPEG |
| Backup Camera | Included, HD, Night Vision, 170° Viewing Angle, Waterproof |
| Item Weight | 2.72 pounds (1.24 Kilograms) |
| Package Dimensions | 9.17 x 8.54 x 6.06 inches |
8. Warranty and Support
For warranty information, technical support, or service inquiries, please contact the PLZ ONLINE STORE directly through your purchase platform or their official support channels. Keep your purchase receipt as proof of purchase.
Manufacturer: PLZ



