To connect to a sound system using an optical audio cable:
1Make sure that your radio and the sound system are turned off and the power cords are unplugged.
2Connect one end of a coaxial audio cable to the OPTICAL jack on the back of your radio.
Optical audio cable
3Connect the other end of the cable to the OPTICAL IN jack on a sound system.
4Reconnect the power cables, then turn on your radio and the sound system.
5Select the audio input on your sound system that matches the audio output jack you connected your radio to.