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Old 09-30-2013, 08:39 AM
Wet_Boots's Avatar
Wet_Boots Wet_Boots is offline
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Join Date: Mar 2005
Location: metro NYC
Posts: 44,761
Thing is, a 3-wire pump is never directly connected to a pump relay. It connects to a control box, and it's the control box that connects to a pump relay, and so on back to your sprinkler controller.

If it's actually two power wires and a ground, then you have a two-wire pump. Easy enough to check with an ohmmeter.
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