Hi Chemprof,
Check the dash wiring. It sounds like a the power or ground source for the dash is loose, or there is a broken wire bouncing around and touching things it shouldn't.
Preachp
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Cruisin\' the byways of life for Christ
You got it! Found loose connections under the cockpit. While moving the wires around even the temp gauge responded. Using the service manual I'll remove the fairings and cokpit fairing and attack the problem. Thanks for the help.