Mine are the version1 I guess because they have the red reflectors and backup light on the bottom as my signature on the left. When I took mine apart, there is a little box inside that has the electronic board and it was there that I found the diode sticking up. I soldered it down and a month later - same thing. I then bought the diodes as mentioned above and replaced it with a new diode. It's been 4 years and they still work good - knock on wood. If there is some type of box in yours and because it's not working, I would be tempted to take it apart and then try and determine the problem. The box or whatever could be resealed after.