Water Pump Keeps Running

[Rob Robinson]

I seem to have a water pump that keeps running. I have the two pump
system with the bathroom switch that lets you select pump A or pump B
or both. When I select pump B or both A & B the system continues to
run. Is there a pressure switch that could have gone south and if so
can anyone tell me what it looks like and maybe where it might be
located. If not a pressure switch could it be some other gold plated
wangflanger part.

Rob 94 wlwb