That may take some doing. The Whale IC is designed to be kind of a proprietary system with the switching circuitry built into the pump (I think) instead of the switch. The Johnson Ultima switch has the switching circuitry in the “box” with the sensor, so it can be used with any pump. You could certainly use the Johnson switch and make your own manifold out of PVC pipe to use with a regular Whale pump. NOTE: I have exactly one installation of a Whale IC under my belt, so verify my statements with your own research.