Not sure if you found your answer, but I have them on my RG. I can tell you when you mock your fender up, you will have to position the lights above the saddlebag support bar because they are pretty thick on the backside. They are mounted with 3 screws into the back of the fascia. 1 on top, 2 on the bottom. I'm sorry, I don't know how to post a pic off of my iPhone. But I was looking myself today, because I'm considering the CVO Chupa as well.
Also, if you notice, on the CVO fender, the lights kind of push in from the back and the fender has a lip around the light itself. Higher at the top and it smooths out towards the bottom.