[Lattimer]

I read a bunch for threads on getting a sender to fit the smaller hole and work with our gauge when I was swapping in the gauge cluster for the idiot light cluster. Didn't see a lot of success stories. So I decided to just try it in the manifold and see what happened. I still had an aftermarket gauge in the truck at the time also.

The gauge was about 80% of the way to the right all the time, but didn't move much once the truck was warm. That seemed right, since the aftermarket gauge stayed right around 185-190 all the time. So I did some searching on calibrating the gauge and found some good posts with instructions on adding a resistor. Quick trip to Radio Shack and the gauge is dead center at normal operating temp.

Keep in mind---nothing much mechanical on my truck is original, and I didn't want it original. So it didn't matter to me, as long as its functional.