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Kendall County, IL | You are correct, electric valve is either fully closed or open and there are a few manual ball valves downstream to adjust flow. I played with the wiring by the valve and best I can tell I only need to use the to two outer wires on the three pin connector for positive and negative to open and reverse them to close. I found no combination of using the middle wire that does anything, maybe in some applications it signals an indicator light in the cab? | |
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