Golf Cart Universal 48V Battery Indicator for EZGO Yamaha Club Car.- The indicator bar is designed to show the battery charge level when charging or discharging, 10-segment LED bar graph.- Application: golf carts, motorcycle, car, ATV, tractor, truck, forklift, jet ski, marine, etc.- Wiring instructions: 1 = Battery(+) & Ignition Switch(+), 2 = Battery(-), 4 = Ignition Switch(-), 3 = None.- Printed status gauge measures LED readout levels from “1”, to indicate full state-of-charge and “0”, to indicate empty; Easy to understand.- Simply connect the positive and negative poles of the power supply to the meter, Easy to Install.