Oh my. Your quite out of date arenât you?
Most of the bright blue lights you see are HID kits that have retrofitted. These have been popular for the last 10 or 12 years ever since the OEMs started using them. People just toss them in and donât readjust their lights. Or else the light source is not where it should be and it messes up the beam pattern.
Leds in cars is a relatively new thing the last 2 or 3 years. There are not many out there on the road yet. Most led kits use big round leds that are bright (some are not), but donât mix well with reflectors. Again the beam patterns get all screwed up.
Led headlights are still in their infancy and are moving away from fan cooled and huge emitters to passive cooling and small emitter groups that mimic the size, shape and location of the original filaments. These will give very good beam patterns as well as much more brightness.
On a projector light, the light source is less critical because you have the cutoff shield which prevents glare.
âGoodâ led lights for reflectors are quite hard to find.
Here are some âgoodâ leds I found for my 86 Honda motorcycle that has a reflector headlight. Note the sharp cutoff (just like stock), plus itâs much brighter than stock.
Stock:
âGoodâ led:
Here is the key to good beam pattern with LED.