Needing help to id this connector

[Kitchi]

I was gifted a 81 xs400 today and a parts bike.Upon removing parts from the parts bike and putting them on the other bike I noticed that both bikes had an empty 6 pin connector above the rear tire.
I am hoping someone can identify it.

 

[xschris]

I think it’s for the rear brake light.

 

[Kitchi]

You are absolutely correct Chris. I checked the wiring diagram an the colors and pin count match.