[Paul from Maine]

Tractor Supply sells a cheap temp gauge that is easily installed in the upper radiator hose. Just buy a couple of washers that fit the outside diameter of the provided outlet fitting for the sender and a toilet tank nut to fit the threads of the outlet. Poke a hole in the upper hose, slip a washer on the outlet, push the outlet fitting through the hose, put a washer on the inside of the hose on the outlet fitting and then clamp it all together with the upper half of a toilet tank nut (I cut mine in half with a hacksaw because it was too thick). Mount the gauge under the instrument panel with one of those cheap gauge brackets all the venders sell, snake the tubing through the firewall and screw the sender into the outlet fitting. Cheap, quick and no leaks!