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Being LEDs they wouldn't be drawing 100 watts of power. They would be comparing them to the brightness of a 100 halogen globe. They would probably be around 7-30 watt depending on the type and amount of LEDs.100w is probably drawing a bit too much for headlights. I'd try to find some 55w versions, I think you'll find they're the same wattage as the ones in there at the moment.