Vintage Air question

[Gene]

I know absolutely nothing about how an ac system works so bear with me please. I recently had my vintage air gen iv charged by a professional, and it was vacuumed for an hour and held meaning the system should have no leaks. Ok, drove the truck home and air worked well, but truck ran pretty warm so the compressor was constantly cycling so I turned it off until I got home. Came to realize that my fan clutch was shot and my fan was not far enough into shroud to be effective. So I installed an electric fan which really pulls the air. Ok here's the problem, I havent tried the ac since I upgraded to electric fan and when I did I noticed the clutch wasnt engaging at all. I have power to binary switch from the main unit but no power output to the clutch? Does this mean that I may have damaged the switch because of high pressure? Or might I have caused a leak by running it for a short period of time with high head pressures?