The converts the AI-NET CD changer port to stereo RCA inputs, allowing any RCA level device to connect directly into the ALPINE audio system, {Radio must be Versatile Link compatible} Use to add: Digital Satellite Radio Portable Mini Disc Player Portable MP3 Player Portable CD Player Mobile DVD Player Mobile VCR/VCP Game Systems Note: Use only if CO-changer is not present. installation Instructions: 1. Turn off ignition, 2. Locate GARNET [CD changer} connector behind receiver and plug in ALPHABETICAL. 3.