Originally Posted by
emman123
I was thinking if it would be possible to take another headlight of the same caliber (500 lumen and up) and somewhat improvise a red screen or case for it that would render it red or other colour suitable for tail light use... can it be done? did anyone try it?
Keep in mind that a white LED with a red lens causes all the light spectrum besides the red portion to be filtered out. That means only the red portion of the visible light is making it through the lens, which means the light output is greatly reduced from that of the original white LED light. I proved it myself by comparing red vs. white LED replacement bulb's for my car's tail/brake lights a few years ago.
A red LED is always best for the most red light output.