Bests & Worsts Reviews from Amazon

For now I'll leave four stars due to my scepticism on have an LED controller running at 84+ degrees Celsius (184F) without expect that will fail. I'm definitely satisfied with the results on change a pair of HID for these LEDs. Measured brightness before and after shows that this LEDs are far more bright. However I also took several temperature measurements which scares me and you can see on my attached pictures. The main controller reached that temperature in just 10 minutes. Reading some other customers reviews I decided to stick an aluminum heat sink in order to try to cool this module and may have some extra lifetime. I also noted that the LED bulb itself don't rise the temperature above 60 degrees Celsius (140F) due to the cooling fan "till it fail lol".. There are two possibilities: I come back here in six months and rise this review to 5 stars or near between come here with my failure analysis. Just for comparison, one image shows my fog light from Syrius (LED) and the head light slight more blue. The last thermal image is an interesting comparison of heat signature of my Prius engine and on left side the bright led controller.. UPDATED: Well, a little more than 6 months as I promised I rose to 5 stars. I'm definitely very satisfied with this Led Light and the electronic controller didn't fail. Just want to reinforce that the usage here is about 4 hous/day mean, and often used for more than 2 hours uninterrupted. One thing I noted (and expected) is that the fans where gone, both fans died but this is not affecting the lights neither the max temperature. Probably there is a thermistor on the LED to slight reduce the current to lower the temperature "my guess". UPDATED2: Less than 1000hrs of life one unit surprisingly had its LED module burned despite of my efforts on maintain the driver cool. Attached the dead module side which caused the entire unit to fail as well a tear down picture. I did some tests on the driver (simple swap) and it's still working, as well I did a test on the internal fan which is also working. So, after tear down I was surprised to see that the module don't have ANY temperature management on its LED boards or the entire heatsink block. Of course, lack of temperature management or current management is the root cause of 90% of premature death of high power LED devices. I'm taking 3 stars out, one for my disappointment, one for the lack of temperature management and another for the lie on their advertises which states "monitor the fan speed to get the best temperature protection", the fan installed is a simple unmanaged 6v fan, there is no sensor to reduce the power on the LED when the fan is manually blocked making the unit reach incredible high temperatures in just a few minutes.