nema info for a 1945disp

I have a 1945disp display and would like to connect to a garmin 7612 chart plotter for heading and nema information. I have the 7pin cable and would like to know what color wires would be connect to the chart plotter.


Thanks

Tony

GPS RS422 NMEA 0183 data can be input on the YELLOW (+) and GREEN (-).

Real heading [not course over ground] (from a flux gate/autopilot or other good heading source) would be connected to the dedicated heading port (6pin).

Thank you