For Flash Memory(USB only)
1. Plug FM Modulator into vehicle 12v adapter
2. Plug your Flash Memory into the USB jack of FM Modulator
3. Switch the channel of FM Modulator which is minimum interfered(87.7, 87.9, 88.1, 88.3, 88.5, 88.7, 88.9 MHz)
4. Turn your car stereo to the same FM frequency ad the FM Modulator
5. Press the Play button of the FM Modulator
6. Play music from the vehicle stereo device through FM Modulator
For using the MP3/CD/DVD Player
1. Plug FM Modulator into vehicle 12v adapter
2. Plug the Audio Cable into the earphone hole of your MP3/CD/DVD Player and FM Modulator
3. Select one of 7 FM frequencies which are pre-set(87.7, 87.9, 88.1, 88.3, 88.5, 88.7, 88.9 MHz)
4. Turn your car stereo to the same FM frequency ad the FM Modulator
5. Press the Play button of the FM Modulator
6. Play music from the vehicle stereo device through FM Modulator