Temperature gauge question

[Bruce Parker (RIP)]

Tom, if it's a Canadian UC then your gauge is doing exactly what it's supposed to do. Ignition off, with no current going to it, it reads all the way to the right (ie. max). Switch the ignition switch on and the needle, now with current, goes all the way to the left (ie. cold, assuming the engine is cold). As the engine runs it shows the temperature of the engine. I expect if your gauge is reading hot after a good run hill and dale it's because the engine really is hot.

[Tom Millward]

Hi Bruce, my gauge is doing as you say when the ignition is off, but when I switch it on with a cold engine it only goes halfway down the gauge, and reads normal operating temperature (engine is cold). Hence when it starts to warm up (not fully warm) the gauge goes to the right and reads off the scale.