GPS receivers connectors  > GNS pinouts
1 GND  
2 TX (from PDA)  
3 RX (to PDA)  
4 Vcc 5V  

4 pin RJ11 male connector layout
4 pin RJ11 male connector
According to 2 reports in our database (2 positive and 0 negative) this pinout should be correct.

Is this pinout
GNS GPS RJ11 Connector visual pinout:
GNS GPS RJ11 Connector diagram
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Source(s) of this and additional information:
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