Posted 6/24/2022 01:03 (#9718562 - in reply to #9718240) Subject: RE: Electric fan for radiator?
NW Washington
I have heard of using an oil pressure sender as a switch for 12 VDC on old tractors without a key switch when switching them to an alternator. You might be able to do the same here using the oil pressure switch to control a relay capable of handling the current needed for the cooling fan.