The external mounted switch (left or right hand)
A close up of a handlebar mounted signal
The front View
If you don't want to run the wires through the frame, you can make the rear fender brace a "conduit" This is a pic of a brace that is wired for signals and power for saddlebag lights.
This is where the "winker" goes
This is a pic of the rear signals mounted. These signals also mount with room for Buco Bag Mounts