Ford 1999 Crown Victoria Owner's Manual page 39

Controls and features
Volume/power control
Press the control to turn the audio
VOL - PUSH ON
system on or off.
Turn the control to raise or lower
volume.
VOL - PUSH ON
If the volume is set above a certain level and the ignition is turned off,
the volume will come back on at a "nominal" listening level when the
ignition switch is turned back on.
AM/FM select
The AM/FM select control works in
radio and tape modes.
AM
FM
AM/FM select in radio mode
This control allows you to select AM or FM frequency bands. Press the
AM control to select from AM selections, and press the FM control to
select from FM1 or FM2 memory preset stations.
AM/FM select in tape mode
Press this control to stop tape play and begin radio play.
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