Wire Color		Function
Red		+5 Volts Input for Throttle
Blue		Negative
Green		Speed Control Signal (1-4 Volts Output)
Yellow		+24 Volts Input for Battery Indicator

The indicator lights react to the battery pack Voltage as follows:

MAX light on at 25.5 Volts

MID light on at 22 Volts

MIN light on at 20 Volts