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Old 07-17-2019, 08:54 AM   #2
tiltrider1
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City: Seattle
Vessel Name: AZZURRA
Vessel Model: Ocean Alexander 54
Join Date: Aug 2017
Posts: 4,309
Your current set up is using NMEA 0183. Find the two wires that go from your autohelm to your current Garmin. Identify which one is NMEA 0183 (+) and which one is (-). Make sure your new set up has a NMEA 0183 4800 baud output. Connect the two wires to it, (+) to (+) and (-) to (-).
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