Vintage Air System not too cool????!!!!

Talked with the VA tech, and he had me disconnect 1 side of the trinary switch and run a jumper wire from the battery to the trinary. This made the compressor run continuosly, fans still would cycle, ran the engine at about 1800-2000rpm's and the vent temps came down to 48-50ish. Now we are getting somewhere. He asked what the pressures are but my high side hose fitting took a dump so I could not connect my gauges to see what the pressures are. So I need to get a new set of gauges or go down to the ac shop and see what the readings are. My best guess is I'm a few oz. low on freon. Thats the latest, will post more when I get gauges or get to the ac shop.