1. Product Overview
The Junsun V1/V1PRO Car Multimedia GPS Radio is an advanced in-car entertainment and navigation system designed specifically for Citroen C5 models from 2008 to 2017. It integrates a high-definition IPS touchscreen with Android OS, offering features such as Wireless CarPlay, Android Auto, DSP sound processing, AI voice control, and comprehensive navigation capabilities. This manual provides detailed instructions for installation, operation, and troubleshooting to ensure optimal performance and user experience.

Figure 1: Junsun V1 Car Multimedia Radio installed in a Citroen C5 dashboard.
2. Key Features
- Android OS & High Performance: Runs on Android 12 (or later) with an Octa-Core 1.6GHz processor, DDR3 RAM (1GB/2GB/4GB/6GB), and ample internal memory (16GB/32GB/64GB/128GB).
- Wireless CarPlay & Android Auto: Seamless integration with your smartphone for navigation, music, calls, and messaging. (Supported on V1 C/V1 Pro C/V1 Plus versions).
- IPS HD Screen: 1280*720P resolution for a clearer and more vibrant picture.
- DSP Sound System: High-quality Digital Sound Processor for optimized audio, including equalization, bass filtering, and sound field adjustments.
- Junsun UI 4.0: Personalized user interface with day and night modes, customizable icons, and integrated common functions for easy access.
- Navigation: Built-in offline maps with permanent free updates and support for online maps.
- AI Voice Control: Control the radio using voice commands for improved driving safety.
- 4G Network Support: (Optional) For internet connectivity, online music, real-time maps, and traffic information.
- Junsun Online APP: Exclusive app for GPS tracking, parking location, and remote surveillance (requires optional dashcam).
- 1080P DVR (Optional): Advanced Driver Assistance Systems (ADAS) with full HD video recording for enhanced driving safety.
- Reversing Screen Function (Optional): Supports AHD Rear Camera and Dynamic Camera for clear rear view and reduced accident risk.
- Online Radio: Access to over 10,000 radio stations from more than 20 countries.
- Split Screen Functionality: Enjoy multitasking with navigation on one side and media playback on the other.
- Button Color Adjustable: Customize the color of the physical buttons to match your preference.
- AV-OUT Support: Connect to external displays for a larger screen experience.
- Steering Wheel Control: Change tracks, adjust volume, and more directly from your steering wheel.

Figure 2: Comparison of Citroen C5 dashboard before and after Junsun Car Radio installation.

Figure 3: Key features: Wireless CarPlay & Auto, IPS 1280*720P, Android 14/13, Bluetooth 5.0, Voice Control.

Figure 4: Junsun UI 4.0 with day and night mode switching and new 3D UI for safe driving.

Figure 5: Offline GPS Map Free Updates and DSP Sound System features.

Figure 6: Junsun V2 Plus model highlights: 4G+5G, 8 Core+RDS, QLED Screen, 6+128GB, DSP, CarPlay, Android Auto.
3. Specifications
| Attribute | Value |
|---|---|
| Brand Name | Junsun |
| For Vehicle Brands/Model | Citroen C5 (2008-2017) |
| Operating System | Android 13 |
| Chipset | MTK 8-core |
| Processor Speed | 1.3GHz-2.0GHz |
| Processor Type | AMP7388 |
| RAM | 4G (Optional) |
| ROM | 128G (Optional) |
| Display Size | 10 inch |
| Resolution | 1280*720P IPS (Optional) |
| Out Power | 4*45W |
| Voltage | 12 V |
| Item Weight | 2.7kg |
| Max External Memory | 256G |
| Interface | USB, RCA |
| Special Features | Built-In Speaker/Microphone, WiFi function, Support 3G/4G Network, Support Can-Bus, Built-in GPS, Mobile Phone, MP3 players, Voice control, DSP, CarPlay, Android Auto, Reversing Input, Split Screen, Support steering wheel control |
| Digital Media Format | Mp3, MP4, WMA, JPEG |
| OSD Language | Chinese (Simplified), Chinese (Traditional), Albanian, Arabic, Azeri, Irish, Estonian, Belarusian, Polish, Danish, German, Russian, French, Filipino, Finnish, Korean, Dutch, Czech, Croatian, Latvian, Lithuanian, Romanian, Norwegian, Portuguese, Japanese, Swedish, Slovak, Thai, Turkish, Ukrainian, Hebrew, Spanish, Hungarian, Italian |
| Tuner Type | 4745/MT6625N |
| Built-in DVD Player | No |
| Built-in CD player | No |
| Is touch screen | Yes |
| Built-in Screen | Yes |
| Category | Combination product |
| TF/Micro SD Slot | 2 |
| Din | Double Din |
| Accessory Type | Power Cable/USB cable/GPS model/Video input cable |
| Certification | CE, EAC, FCC, RoHS, KC, WEEE |
| Material | Composite Material |
| Wireless Carplay & Wireless Android Auto | support Carplay & Android Auto |
| Steering wheel control | support Steering wheel control |
| Bluetooth support | Bluetooth music, Bluetooth phone calls |
| Featured functions | AI voice, GPS track anti-theft, Internet radio, tire pressure abnormality monitoring, rear camera support, etc. |
Included Accessories:
- Frame
- Machine (Main Unit)
- Power Cable
- USB Cable
- Video Input Cable
- GPS Module
- Canbus (if applicable to your vehicle model)
- Instruction Manual
Optional Accessories:
- 4G Module (V1 Plus Support)
- 4G SIM Cable (V1 Plus Support)
- OBD2
- Microphone
- Tire Pressure Monitoring System (USB Tire Pressure)
- DAB+
- Keyboard
- AHD Rear Camera
- Dynamic Camera
- ADAS Dashcam
- Video Output Converter
- Tempered Film

Figure 7: Included accessories for the Junsun Car Multimedia Radio.

Figure 8: Optional accessories for the Junsun Car Multimedia Radio.
4. Setup and Installation
Junsun radios' power cable is pin-to-pin, designed for direct connection to the car's power interface, making installation straightforward. Refer to the "Installation Effect" image in the Features section for a visual guide.
4.1 Rear View Camera Connection
To connect the rear view camera (optional), follow these steps:
- Connect the red cable (②) to the backup light's positive (+) terminal.
- Connect the black cable (①) to the "GND" (ground) terminal.
- Connect the reversing detection cable (④, brown color) to the red cable (③) extending from the video input cable.

Figure 9: Rear View Camera Wiring Diagram. (1) Black cable to GND, (2) Red cable to backup light +, (3) Red cable from video input, (4) Reversing detection cable connected to (3).
5. Operating Instructions
5.1 User Interface (UI) Navigation
The Junsun UI 4.0 features a personalized design with common functions integrated directly into the desktop. You can easily switch between navigation, music, Bluetooth calls, and other features with a single tap. The UI also supports day and night modes, which automatically adjust based on your car's headlights for optimal visibility.
Video 1: Demonstration of Junsun UI 4.0 features, including day/night mode switching, customizable icons, and DSP sound adjustments.
5.2 Wireless CarPlay & Android Auto
For V1 C/V1 Pro C/V1 Plus versions, Wireless CarPlay and Android Auto are supported. To connect for the first time:
- Turn on your phone's Bluetooth and pair it with the car's Bluetooth.
- Once paired, the car radio will automatically jump to the Zlink or AutoLink interface.
- Your phone will prompt you to "use carplay with Zlink or AutoLink".
- Turn on your mobile phone's Wi-Fi, and CarPlay/Android Auto will connect.
5.3 Wired CarPlay & Android Auto
To connect via wired CarPlay or Android Auto:
- Use your original data cable to connect your phone to the 4 PIN USB cable of the car radio.
- Activate the CarPlay/Android Auto function on your phone.
- Tap the "AutoLink" or "ZLINK5" icon on the device to establish the connection.
5.4 AI Voice Control
The system supports advanced AI voice control. Activate the voice assistant by saying "Hey Top" (or your configured wake-up word) and then issue commands such as "Play music" or "Turn on the radio" to control the device hands-free, enhancing driving safety.
5.5 Navigation
The Junsun car navigation system comes with built-in offline maps and supports online maps. You can find the right route regardless of network conditions. Free map updates are provided to ensure you always have the latest data.
5.6 Online Radio
Access a vast selection of online radio stations covering over 20 countries. The system relies on internet connectivity to search and stream multiple channels, providing a wide range of listening options.
5.7 Junsun Online APP (GPS Tracking & Security)
The exclusive "Junsun Online" app allows you to:
- Track your vehicle's real-time location.
- Replay historical routes.
- Remotely monitor and capture images (requires optional dashcam).
5.8 DSP Sound Adjustment
Utilize the Digital Sound Processor (DSP) to fine-tune audio parameters. Access settings for equalization (30 EQ settings), delay, balance, sub-out, and filters to customize the sound output to your preference and car's acoustics.
5.9 1080P DVR (Optional)
If you have the optional ADAS & GPS Tracer DVR, it records full HD video and provides advanced driver assistance features. This includes lane departure warning (LDWS), front vehicle distance warning (FVDW), and forward collision warning (FCWS).
5.10 Reversing Screen Function (Optional)
When an optional rear camera is connected, the system automatically displays the rear view when reversing, with dynamic guidelines to assist parking.