Cool mornings (50F), my tach won't register and small clock stops. But if I turn the dash-lights rheostat all the way off, both come alive. Turning the rheostat back on, both quit again. Later, after car warms up, can turn up rheostat without losing tach/clock. On warmer mornings, no odd behavior.

Any ideas?


(Now at 299,025 miles)
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Tom - original owner '84-245na; ipd 25/25 sways; full gauge set; 292K miles and Rolling