LED Headlights

[Kurt in NJ]

The original bulbs filament is V shaped, high-low beam are about 1/16 apart, give off light in every direction, replacement Halogen bulbs have straight filaments, this slight difference can be seen as a larger light beam with lees definition at the edges, a wider pattern and less sharp of a cutoff
The replacement LED are either a row arranged across, or inline, on both sides of a heat sink, the centerline of the original filaments is occupied by the heat sink, so by design they can't be focused properly in original reflector, perhaps some better than other bad design modifications

You mention generator, lights dimming at idle, one of the first tings I noticed putting the quartz halogens in was that I could barely see any changes between idle not charging --and full charging, the generator has been ok with running them for the last 20 years, and never use a battery tender.
Yes, I would like LED bulbs, but not at a loss of being able to see the signs at 3000 feet