I was able to get the compressor to run after fooling with the temp.
switch.  I don't think it had been used for a few years.  Maybe it was just
stuck?  I added some freon and it cools.  It sounds like the compressor may
be bad or failing.  I am not sure exactly how much freon is in there.  I
was filling the lo side until I got about 29 to 30 psig.  The compressor
loaded up the engine where it wouldn't  idle very well and the compressor
started making a whining noise (kind of like me), so I shut it down.    It
cools OK, I measured 55F  at the air vents, with the outside air around
85F.  I was wondering if too little freon would cause whining, or is the
compressor bad?  The noise seems loudest at idle to 1500 rpm, then becomes
less noticeable while driving.   Would more freon help?
The system works OK and would be useful for long trips.  The fan is almost
as loud as having the windows down!
                                         Jay '85 Westy (The Hindenburg)