Danny, they have these at the local flaps. If I remember correctly on your model engine the threads are UNF and not NPT.
Here you go... I think this will answer our question's.
https://www.stovebolt.com/ubbthreads/ubbthreads.php/ubb/showflat/Number/1141519/Searchpage/3/Main/167950/Words/temperature+bushing/Search/true/Re:_Water_Temp_Gauge_Fitting_a.html#Post1141519
OOPS....your looking for electrical....sorry
Last edited by Achipmunk; 02/13/2016 3:49 AM.