Originally quoted by Slickone
So people (and me) paid more for the SS's that aren't as bright as XT's, just for a white look? The XT's have the normal halogen yellowish look, correct? And the XT's would have a fairly short life too? Are these similar to the Philips HV? Are these all "+30% bulbs"? If so, which are +50%? The higher wattage bulbs maybe? The 30% and 50% thing is a little confusing to me without knowing what brands/models/types these are.
You said there is no 50% Euro bulb, but you also said the Philips Vision Plus is a 50% Euro.(?)
There isn't a Euro crossover # that is a 9004 is there?
BTW, I made a type above, saying XT's were Philips (fixed).
Sorry. I meant to say that there are no +50% bulbs in the US. The european +50% ones aren't availible short of ordering on the web, or finding them in a specialty shop that retails all of osrams or philips products. The +50% bulbs are not a higher wattage bulb. They utilize a different gas mixture and pressure and filament alignment to create the "+50%." Yes, basically the SS bulbs in the US are for a cosmetic white-blue look, they are not brighter in lumens than a similar XT +30% bulb. The XT have the normal halogen look to them because they are not coated bulbs, although, some people, including myself think that compared to a regular halogen bulb, the XT's look "whiter." I should also mention that the +30% and +50% ratings are actually based off lumenoscity, and does not mena that much more lumens. The XT have a shorter life than regular bulbs, but in my opinion its not significantly shorter.
I've read this several times, and it still doesn't make sense to me. You seem to contradict yourself.? What I mean to say is that your stock vehicles headlight harness is most likely not putting out 13.8 volts, so, if you were to use a harness (or make your own) to draw power directly from the battery, then the bulbs would most likely yield a life that of which is rated by the manufacturer. This being said, if your stock harness isn't putting out the 13.8 volts to the bulbs, then they should, hypothetically, last longer than what the manufacturer rated them (keep in mind that the manufacturer usually rates their bulb's brighteness/life/etc at 13.8 volts), although, they may as well last shorter than the manufacturers ratings because of voltage fluctuations in the vehicle's stock harness. Also, having a seperate harness that draws power off the battery instad of the vehicles harness would likely alieviate voltage fluctuations that may be inherent in the stock vehicles wiring.
So I guess without going to HID or using higher wattage bulbs, my choices (not knowing what a 50% bulb is) are a 30% super white (bluish) bulb to look similar to HID, like the SS's, or a 30% clear bulb that is brighter but traditional halogen yellow light, like the XT's (and...?). And it seems the SS's are the best 9004 super white OEM wattage bulbs I can get. Do not get HID for an H3 application. The size of an HID capsule is far from being close to that of an H3 bulb, and the optics are not even close because of the differences in the bulbs' sizes (H3 and HID incompatibility are further explained in the lighting FAQ). Yes, your choices are limited to the SS, the XT, and a yellow/gold bulb (availible on suvlights.com) in stock wattage, that if you wanted to stay stock wattage in the H3 application. Some fog housings can take the additional heat of higer wattage bulb, but you also should make sure the wiring can take it too. The 9004 SS are probably the best (and street legal) "super-white" bulbs (I have not personally done any real life comparisions to other blue bulbs out there.
I doubt I could get HID changeover lenses for my vehicles.
My lenses are basic square flat ones so I don't think I'd get much of the prism effect, as in the first pic MercenaryForHire linked to. I've seen several HID kits installed and the patterns all looked good. But perhaps the kits will be outlawed soon anyway.
BTW, I have a '00 Nissan Frontier, and a '87 300ZX. You can get some clear lensed housings (yours are semi-sealed beam or sealed beam headlights?) and then mount a projector into that. HIDforum.com has some helpful things and ideas on how to go about doing this.
As for the auto on/off my best guess is because of the numerous voltage changes in the bulb's duty, the bulbs probably have a shortened life span.