Hi Reel,
I added another floating switch in an area that if it got water, I really wanted to know and a buzzer. I had a buzzerr laying around from an engine I helped rebuild.
You could hook it up to your main float switch but that was not of interest to me (that would be normal for that switch to engage and clear water). It is more intersting to know that water is getting to places that it never has or should never get to.
So, I added anthor Rule float switch for $25; 2 stainless screws for the float switch and buzzer to be mounted; short length of marine grade wire; some wire connectors; and a buzzer.
Thanks,
Ed