If you are talking about HIDs being hotter than the h3 bulbs? They shouldn't be, h3 heat the filament, and the HID is like a tazer. It's an arc from one pole to other. So it will produce heat but not like a bulb. I had some brighter h3's that heated the reflective coat off, and melted the opening of the housing. So I swapped the parts around from the high side to low, and low to high. They are just about the same. The only difference is low has a half spoon to block the center. Any way The HIDs are not hotter than h3s, the ballast is what gets warmed up. Only in the start to light HID, which doesn't pull as much power as your regular bulb, then less once it's on. Plus unless you touch the HID bulb you may never have to change it, the ballast is what wears out. The only thing you have to worry is getting the bulb completely in water, cause the bulb (HID) is not sealed on the end.