Quote Originally Posted by 85Ram50 View Post
There is a two pin sensor and a single pin sensor in the driver side of the block behind the distributor. I figure the single pin is for the dash gauge and the two pin is for the computer. I do not have a computer or pretty much any of the electrical stuff that came OE on this thing.

Can I use that two pin temp sensor hole for a grounding temperature switch to control an electric fan?
You're correct. The single pin connector is for the temp gauge; the two pin is for the computer. If there's no longer a computer, the two pin is now nothing more than a hole plug. You could use that for a fan thermo-switch, but keep in mind that it is before the thermostat. Typically the sensor switch is after the t-stat, either near the top or the bottom of the radiator.