I mounted the control box under the fake intake. Just get a firm grasp, pull up and the thing will pull off. There are some of those funny damn clips that you lose when messing with GM products under there, but I didn't lose any.
Here you can see I attached the ground to the cowl screw. I put the ground between the screw head and the washer because the cowl is fiberglass, yet underneath is metal. This way it's grounded to the body.
I used "industrial strength" velcro to hold it in place. This way if I have to remove the cowl(for windshield replacement

) I can get to the screw easily.
You can see the antenna cable on the right.