Also, I don't want to buy a control box if its the wrong size. I won't be able to take it back and they're not cheap. I'll check ohm readings between the motor wires and see if that will help.
edit: Being that its a crc box with a start and run cap, is their a difference in pressure switches for crc vs. non crc? Can you link me to one that would work for a 1.5 hp? (saying that thats what it is)