Carolina , small low voltage light on an extension cord plugged in GFCI and visible at a location of your choosing. Easy minor safety.
da prez
Now, I wish I had thought of that

To further compound things, to add the wire to the under the house wiring was/is a challenge. I have put it off until spring.
So, I plugged a cord into the power supply for the freezer on the back porch (GFCI also) and ran it down to one of the "vents" in the curtain wall and then hard wired it to the future connection for pump power.
Since it is GFCI also and I did have some GFCI circuits on the back porch Christmas Light wiring trip, I was concerned with that power as well.
So, to check that power was still be supplied to the pump's "outlet", I'd just open the Freezer door to see if the light is on.
Your solution is much simpler (since we keep the freezer locked). And much easier to implement and verify.
Thanks.
