http://www.mp3-box.org/car-mp3-player-fm/
How to make my car mp3 player with fm modulator works in my car?
Hey guys, i bought a car mp3 player with fm modulator but it doesn’t work in my car when i pulg it into the cigarette lighter! The brand of my car mp3 receiver is kenwood and the modulator is ‘i-mobile’!
3 Key points to making any media player/ FM modulator set up work:
#1 – MP3 player connected correctly to FM transmitter, usually through headphone jack or dock connection to transmitter
#2 – Find an empty radio frequency (87.9 gets me from Detroit to Atlanta with one interruption in mountains in Tenesee but I can’t get to Lansing without changing, go figure!) on your stereo
#3 – Set the FM transmitter to broadcast on that radio station you identifed as blank.
You should be all set, hit play on your mp3 player and the player should play to the transmitter which will broadcast to the blank station and come out of your speakers.
Look at your transmitter and see how it indicates successful transmission, some light up, some display station #.
Good luck!
Car MP3 Player FM Transmitter with SD Slot and IR Remote (SD/MMC/USB Port/MP3)