Optronics Amber sealed mini stud mount marker/clearance light, self grounding

i installed these lights on my bumper an it turned out great. vary easy insulation

I purchased two sets of these bulbs as fender lights for my automotive trailer. Installation was pretty straight forward and they worked as expected. BUT, these lights are terrible quality. For example: I used the trailer for ONE trip (maybe 4 hours of lighting time) and already one of the bulbs went out. I double checked the wiring and drove with it again a few weeks later. The bulb didn't even turn on. Thinking it was faulty, I exchanged it at the store for another one. At the same time as I installed the new light, the OTHER fender light went out. This is after maybe 8 hours of total driving time. I have driven on about 4 more trips which total maybe 7 additional hours of lighting, and now NEITHER BULB lights up anymore. Long story short - these bulbs WILL burn out extremely quick. Despite their 3-year warranty, make sure you read the fine print - bulb replacement is NOT included! I am extremely disappointed in these lights and will never purchase them again. Don't make the same mistake I did. Get some LED lights or a different brand. These are terrible.