Got an electric fan on my '73 40 w/ 350. It has a sensor mounted in the intake that kicks it on at 190. My water temp gauge goes into my drivers side head. Fan has always worked great in the past, but recently the gauge shows 220-230 before fan comes on. Changed out sensors but the new ones do the same thing. Wondering how others have there fans hooked up. What type of sensor are you using? Where do your gauge and fan sensor attach?