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There should be a little screw on the back of the gauge to calibrate it with. Turn the ignition on but don't start the engine then use the screw to adjust the gauge to zero. Job done
There should be a little screw on the back of the gauge to calibrate it with. Turn the ignition on but don't start the engine then use the screw to adjust the gauge to zero. Job done
It’s a electric evo prosport gauge thow?? Not mechanical ???