Car MP3 is also called audio converter, car MP3 wireless transmitter or MP3 car audio companion, etc. There are many kinds of common similar car MP3 devices, and they are very popular in the market now. So, what is the installation method of car MP3? Yes, next, follow the HITSOUND electronics manufacturers to find out. 

(1) Insert the car MP3 audio converter plug into the car's cigarette lighter jack, and the red indicator light is on. 

(2) Insert the audio input plug of the car MP3 audio converter into your MP3 headphone jack. 

(3) Open MP3 and adjust the volume to about two-thirds of the larger range. 

(4) Set the frequency of the car's FM radio to the frequency identified by the car's MP4 audio converter or let the FM radio automatically search for this frequency to listen to music; properly adjust the volume of the car's FM radio to a satisfactory level.