I have a 240v water heater thermostat, i thought that it could run fine on 120v. Either that is the problem,or i have no clue how to wire a light onto a thermostat . the hot leg from the outlet into port of the the thermostat. From there it goes into the light bulb. The neutral goes straight from the outlet to the bulb. Here is a picture of the diagram i am following. And here are a couple of pictures of how i have it hooked up. The lightbulb comes on but the thermostat will not shut it off once it reaches the desired temperature. There are multiple causes for problems that i can think of. Please give me suggestions for making this work. 1)Thermostat made for 240v cant properly run on 120v 2)White and black wires coming off light bulb socket hooked to wrong wires (neutral/hot leg) 3)Thermostat wires not connected to the right ports. All advice is welcome.