I installed a Beacon 2 LED tail/stop light , Stopper 25 LED stop light bar , that mounts to the 2 lower license plate bolts, and a set 2 of Electro-Pods 8 LED, that flash when the brake is applied, purchased from Motorrad Elektrik, plus 3 LED reflectors/marker lights for the 3 stock red reflectors on the rear fender.
I must say that I am quite pleased with the results of the installation.
Got to use it on the way to work on Sunday morning, a car was following not much more than 10 feet behind me, on an empty urban expressway at 5:20 am.
I pushed on the rear brake pedal, I've got the rear brake adjusted, so I have about 1 inch of travel before the rear brake is activated, but the brake light comes on as soon as the pedal is depressed.
The car behind me backed off to about 100 feet after that.
So I guess I have the desired effect of grabbing a drivers attention.