I recently purchased an '03 KTM 640 ADV and have been in early Christmas mode, adding various components to the bike. One of which is to replace the OEM brake light with an LED bulb. I've read information online about LED replacement bulbs and their claimed advantages. I purchased a bulb online and decided to take some photos to determine if there is any significant difference. I thought that others may find the results interesting, I won't state my own conclusions within this posting. I purchased a DC12V 1157 LED bulb to replace the 12V 21/5W OEM bulb. I chose this particular bulb because the placement of the 13 diodes around the assembly appealed to me more than other LED brake light replacement bulbs that I found to be available. Here is an animated GIF file showing the daytime illumination of the brake light housing before and after, photo angle taken from the back of the bike. For those of you who don't like animated GIF files, here are static versions of the above: I wanted to have a visual reference for the actual light output, so I closed the garage doors and took another set of photos with both bulb options illuminating the interior of the garage doors from about 12" away (the bike was on its center stand for all photos).