1. Introduction
Thank you for purchasing the BQCC D3410 Car FM Radio Stereo Multimedia Player. This device is designed to enhance your in-car audio experience with features such as FM radio, Bluetooth connectivity for calls and music, USB and TF card playback, AUX input, and convenient USB/Type-C charging ports. Please read this manual carefully before installation and operation to ensure proper use and to prevent damage.
2. Safety Information
- Ensure the vehicle's power is off before installation to prevent electrical shock or damage to the unit.
- Do not expose the unit to water or excessive moisture.
- Avoid disassembling or modifying the unit, as this may void the warranty and cause damage.
- Install the unit securely to prevent it from becoming a hazard during driving.
- This unit features wiring protection. If the power wiring is connected incorrectly (e.g., positive and negative poles reversed), the unit will automatically power off to prevent burning the motherboard or fuse. This allows for multiple attempts to connect correctly without damage.
3. Package Contents
Please check the package for the following items:

- BQCC D3410 Car MP3 Player
- Wiring Harnesses (2 sets)
- Remote Control
- User Manual (General Operating Manual)
4. Product Overview
4.1 Front Panel Controls

- MODE Button: Switch between FM, AUX, USB, TF, Bluetooth modes.
- Power/Mute Button: Short press to mute/unmute, long press to power on/off.
- Volume +/-: Adjust volume.
- SEL Button: Select function/settings.
- Band/AMS Button: In FM mode, switch radio bands (FM1, FM2, FM3). Long press for automatic station search.
- INT Button: Browse play.
- RPT Button: Loop playback.
- Number Buttons (1-6): Preset radio stations, track selection (+10, -10).
- Left/Right Arrows: Previous/Next track, tune frequency.
- TF Card Slot: Insert TF memory card for playback.
- AUX Input: 3.5mm jack for external audio devices.
- TYPE-C Charging Port: Dedicated 2.1A charging port.
- USB Charging Port: For charging devices.
- USB Reading Port: For USB flash drive playback.
- Reset Button: Small hole for resetting the unit (use a thin object).
4.2 Rear Panel Connections

- ISO Standard Plug: Main power and speaker connections.
- RCA Audio Output: Left and Right channel outputs, can be connected to a subwoofer.
- Radio Antenna: Input for car radio antenna.
5. Setup
5.1 Installation
The BQCC D3410 is a single-DIN car stereo. Ensure your car's dashboard has a compatible slot. Professional installation is recommended to avoid damage to the unit or your vehicle's electrical system.

5.2 Wiring Instructions
Correct wiring is crucial for the proper function and longevity of the device. Refer to the wiring diagram below and the labels on the wiring harnesses.

Key Wiring Connections:
- Yellow Wire (B+): Connect to a constant 12V power source (always on). This provides power for memory retention (e.g., radio presets, last played music).
- Red Wire (ACC): Connect to the car's ignition switch (ACC) wire. This wire provides 12V when the car is started and 0V when shut down, controlling the unit's power.
- Black Wire (GND): Connect to the car's chassis ground (negative pole).
- Speaker Wires: Connect to your car's speakers according to the color codes and polarity (e.g., white/white-black for front left, grey/grey-black for front right, green/green-black for rear left, purple/purple-black for rear right). Ensure correct polarity to avoid sound issues or damage to the amplifier chip.
- Antenna: Connect your car's FM antenna to the antenna input.
- RCA Outputs: (Optional) Connect to an external amplifier or subwoofer if desired.
Important: The unit features power supply positive and negative pole reverse connection protection. If the power line's positive and negative poles are connected incorrectly, the circuit board will not burn, allowing you to correct the wiring without damaging the machine.
6. Operating Instructions
6.1 Power On/Off and Volume
- Power On: Press the power button (usually the MODE button or a dedicated power button) to turn on the unit.
- Power Off: Long press the power button to turn off the unit.
- Volume Adjustment: Use the Volume +/- buttons to adjust the sound level.
- Mute: Short press the power button to mute or unmute the audio.
6.2 FM Radio

- Switch to FM Mode: Press the MODE button until 'FM' is displayed.
- Change Band: Press the BAND/AMS button to cycle through FM1, FM2, FM3 bands.
- Automatic Search: Long press the BAND/AMS button to automatically search for and save strong stations.
- Manual Tuning: Use the Left/Right arrow buttons to manually tune the frequency.
- Preset Stations: Short press number buttons (1-6) to select a saved station. Long press a number button to save the current station to that preset.
6.3 Bluetooth Connection

- Enable Bluetooth: Press the MODE button to switch to Bluetooth mode. The display will show 'BT' or similar.
- Pairing: On your mobile device, search for Bluetooth devices. The unit's Bluetooth name is typically "CAR BT" or "CAR KIT". Select it to pair.
- Music Playback: Once paired, you can play music from your phone through the car stereo.
- Hands-Free Calling: Answer or end calls directly from the unit's controls or your phone.
6.4 USB/TF Card Playback

- Insert Media: Insert a USB flash drive into the USB reading port or a TF card into the TF card slot.
- Automatic Playback: The unit should automatically switch to USB or TF mode and begin playing compatible audio files.
- Supported Formats: MP3, WMA, WAV, FLAC, APE.
- Navigation: Use the Left/Right arrow buttons for previous/next track. Use number buttons for specific track selection or skipping (+10, -10).
6.5 AUX Input
- Connect Device: Plug a 3.5mm audio cable from your external audio device (e.g., smartphone, MP3 player) into the AUX input jack on the front panel.
- Select AUX Mode: Press the MODE button until 'AUX' is displayed.
- Playback: Audio from your external device will now play through the car stereo. Control playback from the external device.
6.6 USB/Type-C Charging

- The unit is equipped with a dedicated Type-C charging interface (2.1A) and a standard USB charging interface.
- Connect your device's charging cable to the appropriate port to charge your phone or other USB-powered devices.
7. Maintenance
- Cleaning: Use a soft, dry cloth to clean the unit's front panel. Do not use abrasive cleaners or solvents.
- Avoid Liquids: Keep the unit away from liquids to prevent damage.
- Temperature: Avoid exposing the unit to extreme temperatures.
8. Troubleshooting
If you encounter issues with your BQCC D3410, please refer to the following common problems and solutions:
- Q: The machine does not turn on, or the screen is unresponsive?
- A: Check the power cord connections. Ensure the yellow wire (B+) is connected to a constant 12V source, the red wire (ACC) to the car's ignition key wire (12V when car starts, 0V when off), and the black wire to the negative ground. Also, check if the fuse at the car's power socket or within the machine is blown.
- Q: The speaker has no sound?
- A: Verify that the speaker wires are connected correctly according to the manual's interface definition or the car body sign. Incorrect speaker wiring can damage the machine's amplifier chip.
- Q: The unit cannot remember the radio station or music settings from the last time?
- A: This usually indicates incorrect wiring of the red and yellow wires. Ensure the yellow wire (B+) is always connected to a 12V power source, and the red wire (ACC) is connected to the car's ignition key wire (12V when starting, 0V when off).
- Q: Unable to read or play music from SD card or USB?
- A: Try using an 8GB or 16GB memory card or USB flash drive. Some large-capacity storage devices may not be supported. Format the storage device and ensure its file system is set to the default value. Also, ensure media files are in common formats (MP3, WMA, WAV, FLAC, APE), as some encoded videos or music may not be recognized.
- Q: Bluetooth connection failed, or some functions are abnormal after connection?
- A: On your mobile phone, search for the unit's Bluetooth name, typically "CAR BT" or "CAR KIT". If you have previously paired devices that are not currently connected, delete them from your phone's Bluetooth list, as they can interfere with new connections. If issues persist, try resetting the unit.
For issues involving disassembly or circuit problems, it is strongly recommended to seek professional assistance to avoid damaging your car or the device.
9. Specifications

| Parameter | Value |
|---|---|
| Model | D3410 |
| Type | Car MP3 |
| Program | 5323 |
| Frequency | FM 87.5~108MHz |
| Power | 45W x 4 |
| Voltage | 12~14.4V |
| Operating Temperature | -10~60°C |
| Bluetooth Version | Version 5.0 (Default name: SWL-BT) |
| Screen Size | LED display (red light) |
| Installation Dimensions | 178x50mm (7.01 x 1.97 inches) |
| Shell Size | 188x58mm (7.40 x 2.28 inches) |
| Host Depth | 55mm (2.17 inches) |
| Button Light | Red |
| Wiring Protection | Support |
| Front USB | One USB2.0 reading + one USB charging |
| Type-C | 2.1A charging |
| TF Card | Support |
| Reset Button | Support |
| Audio Output | 4 channels (2 left channels + 2 right channels) |
| Audio Input | Front AUX input (left channel + right channel) |
| Audio Format | MP3/WMA/WAV/FLAC/APE |

10. User Tips
- For optimal performance and compatibility, use 8GB or 16GB TF cards or USB flash drives for media playback.
- When experiencing Bluetooth connection issues, try deleting previously paired but unconnected devices from your phone's Bluetooth settings before attempting to pair with the D3410.
- Always double-check wiring connections, especially the constant 12V (yellow wire) and ignition 12V (red wire), to ensure proper memory retention and power cycling.
11. Warranty and Support
For any questions, technical support, or warranty claims, please contact the seller or retailer from whom you purchased the product. Keep your purchase receipt as proof of purchase.





