I have a variable load bank that can handle 250 amps. I plan on putting one of these modified controllers on it and very slowly increasing the load to see just how much it can handle. I have no doubt it will be able to run two pumps with no problems but since it hasn't been test in a dual pump setup I can't honestly make that claim just yet. The main thing to overcome is providing the dual pumps with a large enough wire from the controller. I have an idea for doing that by adding an extra output for heavy duty operation. But the wire to B+ is just as important. The way in which the controller works is this. The pump B+ is connected to the battery via the body harness. That never changes. The pump speed is controlled by regulating the voltage via the ground side of the pump motor. So guess how you check the running voltage at the pump? :)
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