Looks like my diagram above is incorrect wrt the hole drilled into the radiator flange.
So here are the pics:
Left side with the radiator guard and shroud installed.
New hole in the Unabiker radiator guard - lines up with the lower captured nut on the radiator flange.
On edge view of the same.
Top of the radiator. The bolt and nut goes through a new hole in the radiator flange. I'm using a lock nut on the inside and a
short socket head screw. This is here that grounding wire connects too.
With the side guard removed. Now you can see the surgery on the radiator flange and the new hole in the flange.