Originally Posted by 8Complex
I know the ECU gets a real temperature reading off of the stock sensor, so I suppose it'd just be a matter of making tick marks on the dash gauge at certain temperatures so you're actually able to read it.
I think the OP's desire was to have a gauge that fluctuated as the motor heated and cooled, such as when the car was stopped in traffic. The (late model only?) stock gauges are "damped" or "dummy" gauges so that they don't move from the middle position unless it's almost too late.