Here's the scoop I want to finish up some odds and ends in my fummins and want to get the ac wired in. Heres what I was thinking - switch on the dash to a fuse then a 30 amp inline relay then to the low high pressure switch then down to the compressor. Is this correct? Let me know how you would do it. By the way most of the factory wiring is gone. Thoughts?

 

I would put the low pressure in line with the switch before the relay. I am not sure if the low pressure switch is up to handling 30amps run through it.