I have been experimenting with different ways to get more light shining to the rear when braking on my 2010 Road King without breaking the bank. I ride with a couple of guys that have put the modules in to convert the turn signals into running/brake lights but I want to keep the amber turn signals back there. They have also used the ones that flash the lights 5 times before coming on steady. I am not fond of them, especially because when I follow one of them he tends to put turn signal on at the same time as the brakes and its hard to figure out what he is doing. Anyway I searched online and found hyper lites at Hyper-Lite Motorcycle Auxiliary Flashing Stop & Running Lights, Hyperlite, Sampson Long Distance Motorcycle Products. They were less than $50.00 and extremely easy to add to my bike as they use 2 sided (strong) tape to hold them in place and they wire into the brake light with simple tap connectors. I will try to attach some pics of them, they are nearly invisible unless the brakes are on.