Maybe this will give you some insight.
You must first take the knob off of the back side of the fairing. What I do not remember is where are the bolt heads that hold that bucket in the fairing (it's been a while...
If you remove the left and right side covers, you will see something similar to this on the inside of the fairing:
Those two nuts hold the housing in the fairing. In some cases, two sided tape may also be holding it in at places to.