Get wired - Pinout and description of Lowrance GlobalNav 310 connector.

Lowrance GlobalNav 310 connector


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4 pin LOWRANCE SPECIAL special connector  at the GPS
Pin Name Description
1 VCC Power
2 RX RS-232 (receive serial)
3 GND Ground
4 TX NMEA/Pseudo RS-232 (transmit serial)

Source: Lowrance Website