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4 pin Lowrance proprietary connector layout
4 pin Lowrance proprietary connector
Pin Name Description
1 VCC Power
2 RX RS-232 (receive serial)
3 GND Ground
4 TX NMEA/Pseudo RS-232 (transmit serial)
According to 1 reports in our database (1 positive and 0 negative) the Lowrance GlobalNav 310 pinout should be correct.

Is this pinout
Lowrance GlobalNav 310 visual pinout:click to enlarge
Source(s) of this and additional information: Lowrance Website, from Hardware Book
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