Quote Originally Posted by Brissieboy View Post
I suspect that it is due to the difference in the source of the light.
H4 headlights rely on a point source of the light from the small filament for the reflectors to work properly and the LED versions have a wide spread source of their light - being sourced from many individual LEDs over a relatively large area. The design of the reflector is critical in producing the beam.
I have played with some H11 LED bulbs and even though they produce a similar amount of light to incandescent bulbs, they do not produce a significant beam from the reflector housing.
So you can still fit H4 LEDs to factory reflector housing?? or do adjustments need to be made??
Also do you happen to know what Wattage and Volts the factor headlights use??
Cheers