They say they are waterproof. But after mine got wet mounted on the outside of the shield they did short out. Ecoxotic was nice enough to replace the two I had that did die. It took some time for them to go because they are waterproof. But not to the extent that they will survive their life expectancy mounted on the outside of the shield. My advice from experience is mount inside the shield. I have 4 of these in the for sale section of this forum if anyone is looking for a set. I'm saving for full led.