https://www.stovebolt.com/ubbthreads/ubbthreads.php?ubb=showflat&Number=1014407&page=allThis is a great thread about these switches. The thing that isn't mentioned is what happens when you put 12 volts to it. In that case, Power comes into play, not just Ohms Law. The 6 volt resistor wattage rating is half that of what is required for 12 volts, thus why it gets so hot. I am looking into a more optimal ohm value when using a 12v motor (12v system) and a higher wattage solution so you can feel safe using the stock switch.