Thank you for the response.

I did unscrew the switch and there is no apparent damage, corrosion, etc. The wire and "telephone type" connector appear to be undamaged as well. The switch is also correctly oriented to the proper flow direction.

I cannot do a "continuity check" since there are no open connections at the switch end. Therefore, I cannot test to see if there are any opens in the wire. It appears to be some sort of "inductance switch".