You might want to just buy the whole kit, As for the controller it works just as described. The controller is very easy to install, but depending on where you put the lights it can take some time. I have the set for the engine, a set under saddle bags in back, and a set up under front of faring. Need to move these around for more visibility. I hooked these into a fuse block, and the the brake light modulator. When I stop all the Led's cycle through the same pattern as the brake light. Making everyone around me aware that I am there. The App is really fun to mess around with, On top of all that you should see how many smiles and Hey that's cool comments you get, :-]