Interfacing to Garmin 400S + 500S Series

Garmin 541S

 

Garmin’s 400S and 500S series of small combo plotter fish finders (S denotes built-in Fish Finder) all have two NMEA0183 ports and are very easy to interface our Sonar Server to.

The wire colours of the Power/Data cable are consistent across every model in the 400 and 500 series and a wiring diagram can be found by clicking here.

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