Engine sub-harness: what's the black connector for?

[Lyonardo]

This is the harness in front of the air cleaner box.
I've got the red, white, and blue connectors all set but can't find what connects to the black lead. I took dozens of photos as I went, but for some reason, didn't bother in there.

I doubt that it was hanging loose, so what am I missing?
Thanks,
L

[bill-jr]

Extra you dont need it .

[John Schmidt]

See my answer on the Tech side.

[Robert]