Chrysler MEDIA CENTER 730N RHR Owner's Manual page 118

The display will switch automatically to the AUX mode
when a 3.5 mm stereo mini-jack cable has been connected.
The radio screen will revert back to the last tuner mode
when the cable is unplugged.
To change radio modes while the cable is connected to
the unit, press the RADIO/MEDIA hard-key until the
AUX tab is displayed on the top of the screen. Touch the
AUX tab to return to the AUX mode.
Adjust the volume with the ON/OFF VOLUME rotary
knob, or with the volume of the attached device.
The control of the external device (e.g., selecting playlists,
play, fast forward, etc.) cannot be provided by the radio;
use the device controls instead.
NOTE: Inserting a mono jack will result in improper
audio playback.
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