I've tried the instructions shared by Americarider earlier in this thread as well as everything else I can think of on my new (2022) Bobber, and haven't had any success changing it to the AM/PM format. If anyone has been able to change any recent year Bonneville clock from one format to the other, please document the exact steps that worked for you and share them with everyone.
Thanks,
SouthBaltoDavid
This is on page 33 of the downloadable Bobber/Speedmaster manual (too large to attach sorry), hope it has what you need:
" To reset the clock:
• Select the clock display.
• Press and hold the SCROLL button
for one second, the clock’s hour
display will start to flash. Release
the SCROLL button.
To reset the hour display:
• Make sure the hour display is still
flashing then press and release the
SCROLL button to change the
setting. Each individual button
press will change the setting by
one digit.
• When the correct hour display is
shown, press and hold the SCROLL
button for one second. The hours
display is set and the minutes
display will begin to flash. The
minutes display is adjusted in the
same way as for the hour display.
• Once both hours and minutes are
correctly set, press the SCROLL
button for one second and the
display will cease to flash"