I think I have this figured out but wanted to get some confirmation from the electrical cognosenti before I wire this up today. My Bin Level Sensor has 5 wires - 2 for 110V power, and 3 for the switch. The switch wires let you choose either Normally Closed or Normally Open and 1 wire just doesn't end up getting used. I'm pretty sure that I want Normally Open ??and that those 2 wires connect to the positive wire of the 12V wiring that runs the Flashing Alarm strobe light I've got. So I just cut the hot wire of the 12V power and connect the 2 ends up to the 2 switch wires from the bin sensor ?? And it doesn't really matter which switch wire goes to which end of the cut 12v wire?
Here's a pdf with the info on the sensor if that helps