Well….
That’s not exactly how I went about it.
I turn the switch to the pump off and verified via meter.
Turned off the valves feeding the house and the sprinklers.
Removed the old switch and installed the new, wired it up.
Checked everything and turned the power back on.
I heard the pressure build up. Opened all the valves. Tested the faucets. Checked the water pressure (45 psi).
put the cover back on and called it good.
Should I be checking something else?