Raymarine ST50 connectors

Which instrument? Male or female?

I thought that they were all different, or perhaps I only have one instrument with just a two-pin connector.
 
The 2 pin connector to the Nav instrument comes as an NMEA cable - try ebay, there's one there for £15.
... or tin a suitable diameter of wire, poke it through the rubber cap, set with some araldite, apply a little vaseline and Bob's your uncle.
 
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