[s-cars] More A/C advice needed

[Djdawson2 at aol.com]

OK OK...
I never said I was going to attempt to charge through the high side, so you  
friendly folks that are sending me death warnings off list can cease.  I'm  
actually trained and certified in automotive A/C systems (so that I could buy  
R12), so I know better.  Was just looking for a low side port, which,  thanks 
to the help of Bob Rossato and _Robert at s-cars_ (mailto:Robert at s-cars) , I've 
located.
 
The trouble... I can't get the compressor to cycle on at all.   Bypassing the 
low side switch doesn't do it either.  Low charge level may  not be the issue 
at all.
 
So... due to the fact that I recently changed computers, I don't have  access 
to my Bentley (need a new security code to load it).  So if there's  anyone 
out there with a few minutes to look... I would love to know what signals  can 
keep the compressor clutch from activating, other than the low pressure  
switch.  There are 3 wires going to the A/C compresor.  The one big  one that goes 
in near the clutch, which I'm assuming is the usual one found on a  compressor 
to activate the magnetic clutch.  The other 2 are together, and  go to a 
terminal on the side of the compressor.  Not familiar with  these.
 
Was also at the dyno today with a couple of cars, and will post on that  
later.
 
Thanks for any input!!!
Dave