1. When choosing a channel, do not conflict with other programs to adjust the channel, if not, format MP3. There is still noise, and then check the contact points of each speaker for virtual wiring.

2. If the USB connection is used to charge the MP3, then the MP3 sends the signal through FM and is received by the car radio. At this time, it is necessary to check whether the frequencies of the sender and the receiver are consistent.

3. You can change a MP3, change a USB cable, lower the MP3 volume, increase the car audio volume and other methods to suppress noise.

4. If the MP3 is the kind that is plugged into the cigarette lighter, the kind that is played through the radio. There will be more or less channel noise, there is no way.

Car MP3 is a modern trend product, sought after and loved by many enthusiasts. Gradually, remote control car MP3 began to replace the traditional MP3. Also known as audio converter, car MP3 wireless transmitter or MP3 car audio companion.

Here's how to use it:

1. When using the car MP3 player, insert the USB cable of the car MP3 adapter into the USB port of your portable music device (MP3).

2. If the frequency of the car radio that selects a frequency point of the car MP3 is set to the same frequency as the car MP3, you can listen to music.

3. If you press the playback button on the MP3 in the car, playback starts, and the channel and sound can be adjusted by pressing the button.

4. By adjusting the volume of portable music equipment and car audio, the music effect can be remarkable.