Ordering the control box off 031 is the best and easiest. I was only able to purchase control box and gauge package, even though I purchased gauge on Amazon already. If I knew the voltage the gauge needed I wouldn't have bothered with the control box.Your saying I don't need to purchase a control box off of a 031 to convert the 033 to dig gauge and I also want to be able to input purge times? I just need a power supply for dig gauge. Tuxing isn't as responsive as they once was. I actually received the wrong compressor and just told them. I'll see what I can get for free.
In short yes, i dont think you need the control box if you are willing and able to do a little electrical work.
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