NMEA connection Garmin 521s to AIS watchsea Class B transponder

[Popski]

Hi All. I’m struggling to find a connection method between my Garmin 521s Chart plotter and Watchsea Class B transponder. I’ve tried to find the necessary pin outs to connect both via 0183 but to no avail. So perhaps my only method would be via N2k. Could anyone here advise me please as I’m stuck. Thanks in advance

 

[vas]

generally two issues re NMEA0183:
1. baud rate, AIS needs the fast speed which usually is configurable from the plotter menu
2. AIS will probably have 2 wires + and -, garmin plotter would have 1 (which should go to +) the - from the AIS has to be connected to plotter black/gnd/whatever.

obvs AIS out goes to plotter in

V.