What Are These Colored Wires On My Nexus Sensor Module For?
May 7, 2020
Yellow = key on power supply.
*Must stay powered on during cranking of starter. Failure to do so may cause mis-calibration of gauges
Red = constant battery power with key on and off
Black = common chassis ground
*Green = tachometer signal from tachometer output of ignition box or negative side of ignition coil.
*This connection is option and not required for operation of your Nexus gauges.
*Purple = new tachometer output to operate your tachometer.
*This connection is option and not required for operation of your Nexus gauges.