There no real easy way to connect a GP320B to a 1942MK2. GP320B was designed to go with our older NavNet MFD's (such as NavNet 1 and VX2). It also has the wrong connector, so it would require considerable modification work to adapt and a separate 12V power connection to the antenna. If you want to send GPS data to your 1942MK2, that would require a GP33 or GP39 (GPS units we currently sell) or another GPS unit that can output NMEA0183 data.
Do you have a GPS unit on board already, we may be able to interface that and save you some time?
