I had these LED Tail Lights installed by a Mobile RV Repair guy. He removed the stock Bargman Tail Lights which were not very bright at all. Although the footprint for the new Tail Lights was very similar to the footprint for the stock Bargman Tail Lights, once he removed the stock Tail Lights he had to fill the existing holes used for mounting the stock Tail Lights and drill new holes to mount the LED Tail Lights. The new LED Tail Lights are positioned so that the old mounting holes are hidden behind the newly mounted LED Tail Lights. The Bargman LED Tail Lights are very bright and easily seen by other motorists, but they have no back up light feature.