LED Headlamp options

[reverend]

I posted this on another list;

LED (and HID) bulb retrofits = bad. If you need LED, you need a complete assembly, like from JW Speaker.
The very short point is that for a light assembly to work right, what with the exact positioning of the filament in the bulb and the exact positioning of the bulb in the reflector, you need the everything designed to very precise measurements.
This is why the HID arc doesn't work right in a halogen reflector as the halogen bulbs have longitudinal filaments vs the transverse arc in the HID bulb, or LEDs in whatever position. Because the retrofits aren't legal, there's less onus on the manufactures to make them to exacting specs as they'd never be legal anyway. An H4 bulb is a very specific thing, which doesn't include LEDs on an H4 base, or HID arc on an H4 base, etc.
If you swap in these aftermarket bulbs, you will get the wrong beam pattern scattered all over the place (note all the old cars that seem to blind you with lots of brightness - probably aftermarket bulbs) and won't be able to aim it to not blind people without negating any semblance of benefit from
them. It's pretty doubtful that you get the "more light" where you need it
the most either.