Thanks to all those who sent thier = advice on my a/c system. Turns out that 84/85's have completely different = wiring of the a/c systems than the later models. After studying the electral = diagram for a couple hours, I finally decided to cut the red wire w/blue lead and = eliminate the useless "compressor cut-out relay. I will later install a = commercial hi-lo pressure switch and connect the lo side to the = compressor cut-out relay (the hi side will be wired in series the the lo = cutout). This will prevent compressor from sucking air in case of a leak and also = prevent the discharge line from blowing (like in our tremendously hot = summers). I also converted the system to R134a. Runs like a = champ.