I noticed on my dx cluster, there's 3 plugs, 2 big ones and a yellow one
I got an EX cluster and it has 4 of them, 2 big ones, a yellow, and a green one
My harness has no green plug, but everything runs fine

I was wondering what that green one was for and if it's needed

 

I believe it's for Cruise Control. Not 100% sure.

 

^^^ i belive hes right i have the same cluster i just didnt worry about it if it works

 

Green is for the cruise.