1. Introduction
This manual provides detailed instructions for the installation and operation of your Junsun Car Stereo Radio RCA Output Wire Aux-in Adapter Cable. This cable is designed to expand the audio and video connectivity options of your compatible Junsun car stereo system, allowing for external audio input, video input/output, and subwoofer connections.
Important Compatibility Note: This cable is exclusively designed for use with Junsun car radios that feature a compatible frame and connection ports.
2. Package Contents
Please check the package for the following items:
- Junsun Car Stereo Radio RCA Output Wire Aux-in Adapter Cable
- Optional: External Microphone (if purchased with 'with MIC' option)
3. Product Overview
The adapter cable features a multi-pin connector for your Junsun head unit and a variety of RCA and 3.5mm jack connections for external devices. Refer to the diagram below for an overview of the connectors:
- MIC: Microphone input for hands-free calling or voice commands.
- CVBS-IN-1: Composite Video Broadcast Signal Input 1 (e.g., for a backup camera).
- VIDEO OUT: Video output to an external display.
- VIDEO IN: Video input from an external source.
- SUB WOOFER: Audio output for a subwoofer.
- AMP CONT: Amplifier control wire (remote turn-on for external amplifier).
- AUX R IN: Auxiliary Right audio input.
- AUX L IN: Auxiliary Left audio input.
- AUDIO OUT R: Right channel audio output.
- AUDIO OUT L: Left channel audio output.
4. Specifications
| Feature | Specification |
|---|---|
| Item Type | Cables, Adapters & Sockets |
| Special Features | Car Stereo Radio Adapter Cable |
| Material | PVC |
| Voltage | 12 V |
| Item Weight | 100g |
| Item Size | about 160mm |
| Interface | RCA |
| Out Power | Standard |
| High-concerned chemical | None |
5. Setup and Installation
Before beginning installation, ensure your vehicle's ignition is off and the battery is disconnected to prevent electrical shorts or damage.
- Access Car Stereo: Carefully remove your Junsun car stereo from its mounting location to access the rear connection ports. Refer to your car stereo's specific installation guide for removal instructions.
- Connect Adapter Cable: Locate the dedicated multi-pin port on the back of your Junsun car stereo. This port is typically designed for accessory cables like this RCA adapter. Connect the main connector block of the RCA adapter cable firmly into this port.
- Connect External Devices:
- Microphone (if applicable): If you have the 'with MIC' version, plug the 3.5mm jack of the external microphone into the 'MIC' port (1) on the adapter cable. Route the microphone to a suitable location for optimal voice pickup.
- Video Input (e.g., Backup Camera): Connect the video output cable from your backup camera or other video source to the 'CVBS-IN-1' port (2) or 'VIDEO IN' port (4).
- Video Output (External Display): Connect the 'VIDEO OUT' port (3) to the video input of an external monitor or headrest screen.
- Subwoofer: Connect your subwoofer's RCA input cable to the 'SUB WOOFER' port (5).
- External Amplifier: Connect the remote turn-on wire from your amplifier to the 'AMP CONT' wire (6) on the adapter cable.
- Auxiliary Audio Input: Connect external audio devices (e.g., MP3 player) using RCA cables to the 'AUX R IN' (7) and 'AUX L IN' (8) ports.
- Audio Output (External Amplifier/Processor): Connect the 'AUDIO OUT R' (9) and 'AUDIO OUT L' (10) ports to the corresponding inputs on an external amplifier or audio processor.
- Secure Wiring: Route all cables neatly and securely, ensuring they do not interfere with moving parts or get pinched.
- Test Connections: Reconnect the car battery and turn on the ignition. Power on your Junsun car stereo and test all connected functions (audio, video, microphone).
- Reinstall Stereo: Once all functions are verified, carefully reinstall your car stereo into its mounting location.
6. Operating Instructions
Once the adapter cable is installed, the functionality of the connected devices will be controlled through your Junsun car stereo's interface. Refer to your car stereo's user manual for specific instructions on how to select inputs (e.g., AUX, AV-IN, Camera) and adjust settings for audio and video outputs.
- Auxiliary Input: Select the 'AUX' or 'AV-IN' source on your car stereo to play audio from devices connected to the AUX L/R IN ports.
- Video Input: To view video from a connected source (e.g., backup camera), select the appropriate video input source on your car stereo. This is often automatically triggered for backup cameras when reverse gear is engaged.
- Video Output: If an external display is connected, the video signal from your car stereo (e.g., DVD playback, navigation) will be sent to it.
- Microphone: The external microphone will be active when using hands-free calling or voice command features on your Junsun car stereo.
7. Maintenance
This adapter cable requires minimal maintenance. To ensure longevity and optimal performance:
- Keep connections clean and free of dust or debris.
- Avoid excessive bending or pulling on the cables, especially near the connectors.
- Ensure cables are securely routed to prevent damage from vehicle vibrations or movement.
- Do not expose the cable to extreme temperatures or moisture.
8. Troubleshooting
If you encounter issues with your Junsun RCA adapter cable, try the following troubleshooting steps:
- No Audio/Video Output:
- Ensure all RCA connections are fully seated and connected to the correct input/output ports as per Figure 2.
- Verify that the correct input source is selected on your Junsun car stereo.
- Check the volume levels on both your car stereo and any connected external audio devices.
- Confirm that the external devices themselves are powered on and functioning correctly.
- Microphone Not Working:
- Ensure the microphone is securely plugged into the 'MIC' port (1).
- Check your car stereo's settings to ensure the microphone input is enabled and configured correctly.
- Test the microphone in a quiet environment to rule out background noise interference.
- Interference or Poor Signal Quality:
- Check for loose connections.
- Ensure power cables are routed separately from audio/video cables to minimize interference.
- Verify that the connected external devices are not causing the interference.
- Port Conflicts (e.g., existing fan connected): If another accessory (like a radio fan) is currently using a port required by this adapter, you may need to find an alternative power source or connection point for that accessory, or consult your Junsun car stereo's manual for alternative port assignments. Do not force connections into incompatible ports.
9. User Tips
- Always double-check the compatibility of this cable with your specific Junsun car stereo model before installation.
- When connecting multiple devices, plan your wiring carefully to avoid clutter and potential signal interference.
- For optimal audio quality, use high-quality RCA cables for external connections.
- If you are unsure about any part of the installation process, it is recommended to seek professional assistance.
10. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the documentation provided with your Junsun car stereo or visit the official Junsun website. Keep your purchase receipt as proof of purchase for any warranty claims.





