I'm trying to connect up this engine after a rebuilt (95 Johnson 115hp 60degree V4 ocean runner), but got confused on the part circle (nipple bottom part of engine). What is it and where does it connect to? Is it connected to the blue circle? There are actually two cables shown like the blue on each of the engine, I assume they don't go anywhere , so it doesn't makes sense to connect only one. Please help thanks.
Part shows to be : 0340767 NIPPLE, Lower drain on BRP wesbite. Thanks.


Part shows to be : 0340767 NIPPLE, Lower drain on BRP wesbite. Thanks.

