I've got a "53" GMC that I've installed all the running gear from a "78" Blazer.
I've modified an electric two speed fan from a 94 Ford Taurus and mounted it to suck from the rad.
What I'd like to do next is install a water temperature switch in the thermostat housing to control the fans operation via a relay. There is a plug in the thermostat housing now.

Anyone know of a suitable switch I could screw into the thermostat housing? :confused:


53 1/2-ton GMC 4x4
54 Chevy 1/2-ton