I too was not happy with the lights. Stock bulbs seem brighter, so I will stay with stock. Won't spend the money for the HD lights, as the back end is bright enuff. I did add the light I bought from Cycle Gear. They flash when I hit the brakes. So far after them being on two different bikes and now on the trike, cars stop at least three car lengths away for the back end. Total cost about 20.00. Guess if it ain't broke don't fix it. I used double sticky tape and put them under the tour box.