... with different harness and dip-switch setting Features for Car Audio Support USB.SD.Aux: 1. CD sound quality ,NO FM ... format supported. 3.Control the device or music from your car audio buttons or steering wheel, such as, DISK+/DISK -, TRACK+/TRACK ... with:: V.W ,Audi, BMW, Toyota ,Honda, Mazda, Suzuki, Nissan, Sony, Clarion, Alpine, Panasonic, Blaupunklt. ETC,,,