Direct Connection via CD changer Port with CD quality sound,Control music files from your car radio panel or steering wheel.Support USB Flash, SD Card and 3.5mm jack input.Building in high quality MP3/WMA decoder,Building in Amplifier chips,No signal interfere, No battery required, and Easy to install and use, New and High QualityWork : 1. Turn off car engine and remove key from ignition. 2. Remove car radio from the dash in order to get assess to the back of radio. 3. Find CD Changer port and plug Car Mp3 Interface cable connector into it, make sure firm connection.4. Plug USB stick or SD card into Car Mp3 Interface. Turn on radio and press CD (Disc/model/CDC/AUX) button until "CD-X-X" appear on radio screen. And to check left and right sound. And test if can control radio track +/-,Disk +/-. 5. After all test are ok, assembly radio and put Car MP3 Interface in the proper place.Item type: Cables, adapters & socketsVoltage input: DC 12V;Signal-to-noise: 95DBMax. current: 600mA;Frequency response: 20HZ-20KHZ;Working temperature: -10-80 Celsius degree;Total Harmonic Distortion: 0.01%colour: Black + yellowMaterial: PVC+copperCar Compatible with: ( it is 6+6PIN interface)NOTE: Please check the product of all compatible with the range, and then buy the product.If you can not determine whether your car is compatible. Please contact our customer service.If your car does not fit the above compatibility, please do not buy. Otherwise it not work.For :4Runner 2003-20112005-20112004-2011Venza 2009-2011Celica 2003-20052005-20112007-20102004-2011Land Cruiser 2003-2011Matrix 2005-2011Mark X 2005-2011MR2 2004-2010Vitz 2006-2010Yaris 2006-201FORES 300/330 2004-2011,IS 220/250/300/350 2006-2011GS 300/400/430/450H 2006-2011GX 470 2004-2009460 2007-2011,LX 570 2008-20