Hello KGV,
I've looked thru the 9004 HB1 SuperBrightLED headlight selections and found this:
https://www.superbrightleds.com/moreinfo/led-headlight-bulbs-conversion-kits/9004-led-fanless-headlightfog-light-conversion-kit-with-adjustable-color-temperature-and-compact-heat-sinks-5000-lumensset/5401/12502/
The colour temp 6500K with 5000 lumens (slight warm white) is more suitable for night driving than the 7200K (bluish white). The bluish white light may annoy incoming drivers plus provides slightly less useful white spectrum for road illumination.
On the plus side, the cube shaped LEDs conforms to most recent LED construction technology (this by observation - I'm not LED expert).
Amarin.
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