I'm not at home and I can't seem to find a pic I took of the Neptune connector but IIRC it's not completely found and has 2 notches on one side of the plug. I tried to find a closeup of the Reed connector and this was the best I could find
Assuming this is the same Reed probe and my old eyes are not playing tricks, that connector looks completely round with no notches.
Assuming this is the same Reed probe and my old eyes are not playing tricks, that connector looks completely round with no notches.