Black: Ground(-). Stepper motors used for full range of stepping gauges, great feature with its less power consumption, longer life, higher precision, etc. Switch unit between MPH(Mi), Knots(NMI) and Km/h (KM) by Backside Button.
Black: Ground(-). Stepper motors used for full range of stepping gauges, great feature with its less power consumption, longer life, higher precision, etc. Switch unit between MPH(Mi), Knots(NMI) and Km/h (KM) by Backside Button.