I went to a dealer today who sells the ... bright ass lights...., they were out of stock but did have that little display thing ya can play with. The one they had set up was the 4 light. Brightest tail/break light out there (or so they say) I was completely sold on this for a bright, get their attention, flashing light. I had "camera spots" for a long time. They also have a 12 light unit which I did not get to see, but the 4 light just blew me away. It flashed in three different configurations and you can change it easily. At $199, I'm getting one. The 12 light unit is over $400! Just an FYI for anyone like me who so strongly believes we can never have too many lights to help the knuckleheads back there see us. It really is just a plug and play too.