I have not personally connected a Standard Horizon GX2150 to the Comar NMEA-2-Wifi unit but looking at the
manuals for each, the brown wire from the GX2150 should be connected to the Comar's
NMEA In 38,400 Bd port + terminal and the green wire from the GX2150 should be connected to the Comar's
NMEA In 38,400 Bd port - terminal.
What App are you using on the
iPad to display
AIS?