I did an HID conversion for someone awhile back. Used Xenon bulb/projector from a BMW.
I Fitted/fabricated it into their stock headlight dimensions.
The bulb stayed lit when switching from high to low beam. It's my understanding that because of the heat,
cutting an HID bulb off and on shortens their life. BMW used a gate that snapped up or down for each beam.
That is the best I have seen.
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My standards......
I want a sharp cutoff and want it aimed low enough to light the road only....... just below the
oncoming car. I don't need to attract the cops. I also want the Kelvin.......way of
measuring heat/brightness.......... to be in the range of white light, but no colors.
I don't need attention from the cops or to show off something to buddies with blue
light. I don't need to blind anyone to show off that I have something.
I'm not 17 anymore.......LOL
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I suspect the lack of info............
on wattage of ballasts and bulbs is to keep people confused,
so as to over-price things. Lots of bulbs that I have looked at, that are claiming to be
HID, look like ordinary Halogen bulbs to me.....sometimes
they have been dipped in blue......makes me skeptical about what I hear/read.....
and why do I need a ballast for what appears to be a halogen bulb?....and If I don't
understand something, I'm not buying until I do.....
Most of the "driving lights" that I see in the autoparts stores appear to me to have a
halogen bulb....55w....they are overpriced......sometimes blue dipped....sometimes blue
lense.......I can buy 2 driving lights for $15-$20 and outfit them with higher wattage halogens
then put the extra money into a better alternator. and I'm testing with more than one bulb
in the same housing to see what wiring and alternator size I need to power them.
Anything is "better than stock", anything is "better than regular headlights"......
Testing two setups side by side is the only way to really see what is better.
If anyone has a good setup I'm open minded enough to look and learn.
If two people want to do a side-by-side comparison some night
with no driving involved (at least for the light test) I know some dark roads.-Bob