the housings have an H11 bulb for the low AND high beam (seperate bulbs)
My lights take H1 bulbs:
Not H11:
As you can see, there is a big difference in bulb style. If you purchase them from that seller in the link, you're getting H1 just like everyone else who has scored these lights. If you want HIDs, make sure to get H1 capsules (not H11 which has been suggested in this and other threads).
The light output is good with the halogen H11 bulbs, but I upgraded to an H11 10,000k HID (I know people say the higher the "K" the less light output, which is true, but 10,000k is still SO much brighter than stock, and it looks amazing also.
As far as HID goes, 4300K and similar is all you need. Anything over that, and you're just in it for the looks and your useable light (in lumens) drops off as the "K" rating goes up. IMHO, those super blue/pink bulbs are poseur bulbs and look gaudy
to me. You also run the risk of "blue shift" (or whatever they call it) with higher K bulbs (that can leave you almost blind in certain conditions such as fog and rain). I've seen empirical studies out there that show blue light actually increases eyestrain and fatigue over longer distances.There is a reason why Lexus, Caddy, Lincoln, Mercedes etc use 4300K bulbs in their HID offerings. 5000K and 6000K aren`t bad either but anything higher is plain silly. You will see a lot of the super blue lights in the ricer community. `Nuff said.
The reason people tend to want to those wannabe blue lights is they look like OEM offerings in high-end vehicles. If you see a BMW, Mercedes or what have you, they look bluish from the sides. That's just refraction from the projectors they use. If you drive one of these cars (and I have), the light is as white as can be. Maybe a slight hint of blue, but nowhere near the exaggerated blue that these faux HID bulbs and high K HID bulbs give off.
I did a 5,000 mile road trip last summer with many of those miles done at night and I loved the lighting given off by the 4300K HIDs on lowbeam. So much so that I preferred them to the highbeams in halogen.
Nick, Try this
Group Buy thread and
another thread related to it. Lots of answers in there. Plenty of other threads in the archives (good and bad) out there too. Whatever you do, do
NOT use power tools to try and make HID bulbs fit if you go that route. They fit the bulbs just fine without grinding or drilling! They're a tight fit but there is one way to make the H1 capsules slide right in and one way only. Simple trial and error (be gentle) does the trick.