I know the fuel sender is a varistor (variable resistor) but I've been told that both the water temp and oil pressure senders generate current back to the meter, not resistance shruggy confused
I'll have to do some testing on the water temp senders I have in both hot and then cold water using a good VOM using Ohms and then very low DC voltage scope wrench

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)