Gentlemen: How do you look when you're hot?

Side story: When I was a tech at a FORD dealership in the mid eighties, all the new T-birds had a problem with the factory temp gauge reading too high. FORD had no recommended fix. The shop Foreman came up with one. We wired in a tiny inline 'hidden' resistor (I forget what rating) that brought the needle into the correct range. Think of it as an IVR correction.