Since AC pump traditionally are powered on and off with a pressure switch located on a tank tee of a pressure tank, many times there are not signal wires setup underground between the well head and the storage tank. Not a problem. An alternative to wires is a pressure switch attached to the plumbing from the well head to the tank. At the pump you’ll need a check valve, and on the tank you’ll need a mechanical float valve (ball float that closes a 3/4″ or 1″ valve and shuts off water) that will spike pressure in the line when it closes. Somewhere along the line between the two you need a ‘Tee’ with a pressure switch (reverse action) Wires connected to the pressure switch will run into your RPS controller.
