1 Turn on the car power and then plug the MP3 on Channel player into 12V outlet (cigarette lighter) in car. The LED indicator will be blinking, will be playing music automatically. 2 Plug and kinds of flash drives into USB connector on the top of MP3 on Channel player. 3 Just press the ?PLAY? button on MP3 on Channel player and adjust the audio channel on car radio set. 4 Press one more time the ?PLAY? button to be PAUSE mode. 5 Press NEXT(PREV) bottom less than 1 second to change to Next/Pervious MP3 song. 6 Adjust the volume on MP3 on channel player by pressing NEXT(PREV) bottom more than 2 seconds. 7 Adjust the channel setting if the signal is interfered in your area.