The fans are quiet but noticeable from the outside, but it sounds a little like a jet engine inside the cabin. I still wouldn’t touch the actual LED drivers though. Sure they produce a lot of heat but if you touch the LED driver or heat sink the oils from your skin won’t kill the bulb like it would if you touched the glass of the halogen. One last thing is these bulbs are not as fragile as halogen bulbs. A couple solutions would be to modify the bulb and remove the strain relief, or to modify the dust cover collar and notch it where the pigtail hits. This causes a bit of an issue with installation as the strain relief causes the pigtail to come in contact with the dust cover collar and slightly tilt the bulb in the housing. The wiring pigtail exits near where the heat sink and cooling fan are mated. The cooling fan is needed, as these bulbs actually get much hotter than the stock halogen. There is a cooling fan on the backside of the bulb to help cool the driver and heat sink. Unless you have something to compare these to, you’ll never be able to tell the difference so they are effectively bright white. Bright white is somewhere between 5100K and 5500K. 6000K is just barely in the cool white spectrum. These are laboratory numbers, not real life. Even then I’m pretty sure the numbers are fudged and are actually the theoretical maximum for the LED drivers. The bulbs are actually 40W/4000Lm per bulb.
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