Need part for Evans Dash A/C.Trinary sw.
There is a four prong pressure switch that mounted on the high side of the a/c system.The compressor clutch and radiator cooling fan circuits runs through it.It's called a Trinary switch, part #RV2121...
Forum Discussion
I replaced mine about 2-3 years ago. I am not home otherwise I could get the replacement for you. But if you search gjac and trinary switch I have the info there.
