My buddy Rus came up today and helped me knock out some things on both of my trucks. Thanks again Rus!
We got the temp gauge working on Choncho and I am relieved. I don't like running a motor without a temp gauge. I have never had a problem with one ever not working. It turned out to be the gauge in the dash cluster. Swapped it and presto. Out of all the things we did today this was the most important to me.
We did notice that my radiator has a leak around the neck of the top hose. I'll see if I can get it fixed. If I can't I'll be getting a new radiator.