Your thread prompted me to do a How-To on where to trim your stock flap and install an LED tail light, IF YOU DON'T WANT TO RELOCATE YOUR LICENSE PLATE.
We have the same bike, same tail light (mine is smoked w/ integrated turn signals)
Get a $3 mini saw from walmart.
Remove the reflectors. Permanently. They're ugly. Unless you like them.
Remove plate.
If your LED board is JUST the brake light, and you intend on using the factory turn signals, this is all you have to do: Draw a line from where the fender starts at the bottom of the signal stalk and cut to the middle, stopping just below the plate bracket holes. Repeat for other side. Using a tape line might be better, to keep your cut even.
Remove stock tail light & bulbs.
Plug the LED board in to one of the sockets, put new lens on.
Replace plate.
Drink beer.
If your LED board has the integrated signals like mine (I love it!), this is what you do instead in addition/extra:
Unbolt the signal stalks. leave about 1 1/2" of wire from the stalks when snipping them, in case you want to sell them later.
Put signals somewhere safe.
Remove stock tail light.
Remove the seat, hump, and whole rear cowl.
The LED board plugs into 1 of the tail bulb sockets for the brake light, then you'll need to extend the signal wires about 10" (I think). Run the signal wires through a slot by the unused brake bulb socket in order to keep them hidden. At least, that's what I did. (It becomes evident what you need to do once you get the signals off and the wires snipped).
Use a razor blade to shave out the rough saw-cut frilly's, or a sanding block or whatever. (I still have to do this.
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You'll be glad you did it. I will attach a few pics of where to trim, and what mine looks like.
1st pic, keeping stock signals:
