Don:

Remove all the fuses in your fuse block for the coach
battery and then use your meter to see if there is
a voltage across the fuse block where each of the fuses
plugs in.  There will be for the stereo, but should
not be for any others if you have everything turned off.

Or it may be your stereo.  I have a Panasonic that can
run my battery down in 2-3 days.  If I remove the face
plate, it does not.  I have an odd suspicion that some
circuit stays on if I play an mp3 CD, since I don't
believe it happened before I started making mp3s.  The
display does not stay on.  That's why I say "some
circuit"--like the mp3 decoder.

Turning off the music from bed with the remote was a
plus for me, but now I crawl up and remove the face
plate.  :-(

Richard