[Shiwnath]

Originally Posted by cherrington17

The tach is easiest. just know what engine, and someone can tell you approx where it idles.

speedo... you can calibrate with a GPS and cruise control.

Gas, it might take a few fills to get REALLY accurate readings.

and temp, get your car to its normal idle heat (usually 1/2 on mine) and set your needle there.


Its not THAT hard.




Also... if the needles move backwards, or really slow... you have the motors mixed up. They seem interchangeable, but they aren't.

^ This.