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A/C programmer question

Frank J. Bauer                                                                  
dassault systemes of America     email:fjbauer@dsavm.e-mail.com                 
Subject: A/C programmer question                                                
i have an 86 TqW, so this question should relate to all mid-80's 5K's:          
the flap in the blower box that directs air to the face vents is sticking       
in the shut position.  (what else is new?  i've heard this one before - glen?)  
for now, i am quite happy to have it ON all the time (100+F), so i removed the  
vacuum switch and tie-wrapped the lever in the on position.  my question        
concerns the vacuum lines (yellow and green) to this switch from the A/C        
programmer ("terminal" positions 2 & 3).  what is the normal "signals" in       
these lines when opening or closing the flap?  when the flap should be open     
(at max cooling), i get vacuum in the green line, but i see no changes at any   
setting in the yellow one.  should they both "go on" (vacuum) to open the flap  
or is green open and yellow closed?  what would be a typical vacuum reading     
for these lines if i put a gauge on it (mityvac)?