1992 Cadillac Deville AC system

Hi I am having a problem with my ac system. When I put refrigerant in the system it charges 10oz. That is it. I try to turn the controller to auto it stays in Econ with service ac system. It won't charge anything else in the system and the clutch will not come on. I get error codes F46 F47 F48. Any idea. I was curious about the low pressure switch. Or the ac clutch switch. Can I run a wire from the battery to the ac clutch switch and see if it kicks. If it does I know what it is if it doesn't I am not sure at that point. I just don't want to mess anything up that's why I came here first. Thanks.