Trying to install an NMEA 2000, OEM Tach. The included paperwork states the Tach is 12 volt. The included harness has the NMEA connection, 2 wires marked for future use and one set of 4 wires colored red, orange, yellow and black. I would think the black is a ground, and one of the other 3 wires would be for Tach lighting and one other for 12 volt power. Not sure what the remaining 1one is for. I have a Honda OEM engine manual which is of no use.
Question: anyone know what color wires do what?
Thanks in advance!
Question: anyone know what color wires do what?
Thanks in advance!