I plan to connect the NMEA TX wires from my B&G Zeus 3 MFD to the Raymarine S3g Course Computer. It's a bit confusing though, since B&G outputs to TX_A and TX_B and Raymarine has NMEA0183 connections noted "+" and "-".
I have one NMEA 0183 reference and they do not use + and - for wire designation since apparently there is no battery negative wire in the system.
Does anyone know if the TX_A wire connect to the "+" or "-" terminal on the S3g?
