... with different harness and dip-switch setting Features for Car Audio Support USB.SD.Aux: 1. CD sound quality ,NO FM ... music from your car audio buttons or steering wheel, such as, DISK+/DISK -, TRACK+/TRACK-/VOI+,etc. 4.Easy installation ---Plug and play ... . Compatible with:: V.W ,Audi, BMW, Toyota ,Honda, Mazda, Suzuki, Nissan, Sony, Clarion, Alpine ...