two headscratchers!

[SpudMurphy]

Headscratcher 1
In the engine bay is this currently unused plug.
Any clues on what should be plugged into it?



Headscratcher 2
In the left pontoon is a redundant pipe

The charcoal cannister has an orifice on the top which on mine is blanked off. I believe it says "carb bowl"



Here's a picture showing the orifice is blanked



got my head scratching ????

[Future]

Those two wires should connect to some wires (green white + green brown) that lead to the transmission's reverse switch, found on the left side of the trasmission. One headscratcher left though.