I guess I see where you're going. 4th gens only have one switch though, on the high side. But maybe I am not getting enough compressed air into the system to hit that 30PSI mark.I wish I knew what the actual mV readings were. I guess this new aftermarket switch I bought could be a POS right out of the box.
That was my thought too that the system needs to see some pressure before it will kick on.
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