Mine (on a baby Beech) is mounted on the windshield. The only bug is
the wires that feed the internal light in the unit, but the added ease
of use is well worth it, in my opinion.

That being said, some of the mounts are actually for the glareshield,
and I know at least one that works fine. It has a thick pad between the
unit and the glareshield, I suppose it could be some kind of shielding.


Next, I have seen several installations, especially in Pipers, where
some idiot installed the thing buy bolting it onto the GLARESHIELD!


And a super-genius would mount it...uh...where exactly?