I found a cheap bickup light at advance auto parts. It is a led driving light . It comes in blue or white and they sell for about 20 bucks. They are a light bar about 1/2 inch high and 4 1/2 inch long and have 8 leds in them. They come two to a pack so you can split them with a buddy. They fit nice and tight between the lower rack bar that goes unded the tail light and the tail lihgt housing. I used a some 3m tape to hold it in place and the wires have ends on them so you can just plug them in to the back up light wires that are already there. On my 09 650i the red wire from the light went to the brown w/blue ring on the bike and the black from the light to the red w/white stripe on the bike. Not the brighest in the world but a easy backup light.