I started building my styrofoam cooler incubator today and I am having problems getting the thermostat to turn the light out when it reaches temperature. Is it my wiring or something entirely different? Any suggestions would be appriciated. I sure hope it's not the thermostat itself as it was the last one that Home Depot had that was 90-150 degrees. They all seem to be 110-170 degrees here in Canada. Please help I want to set eggs in February for a March break hatch.