Ausley's now offers its all new radios for your 1971 or 1972 Chevelle and El Camino. The face of the radios are a reproduction of the original, while the electronics have the stability and features of a radio produced for a 2009 and up modern car. All radios come complete with the inner and outer knobs, wiring harness, MP3 and IPOD adapter cable, remote control, mounting brackets and screws. Features include a built in SCAN button to allow you to easily SCAN through stations. Easy ON, by pressing any button, the radio turns on. Original style AM/FM slider. Four original style presets. Original yellow or blue dot stereo light that lights up continuously while the radio plays. The ability to play songs directly from your MP3 plater. With the standardized 3.5 mm jack located on the back of the radio you can connect the supplied cable directly to your MP3 or IPOD player and activate the MP3 mode by pressing in on the tuning knob. You adjust which track you want to listen to by turning the knob to the left or right. Now all the MP3 features work exactly the same with a cd disc changer. Other features of the radios that must be controlled by the remote include: adjusting bass, treble, fade, balance. By using the remote you have an additional 6 presets for a total of 10. The remote includes extra function buttons for repeat, auto search presets, BAND, Mute, along with your standard play controls. Your radio will come with a 7 page instruction manual on the features and functions. Installation is simple and straight forward with a wiring diagram included right on the case. 45 watts per channel/180 watts of total output 4 channels/4 speaker availability 2 RCA Outputs CD Changer Input Port 3.5 MM Jacks for IPOD /MP3