Ok, just a quick reality check on bulbs before someone shells out hard earned cash on junk.

The HID look alikes burn around the 4000 Kelvin temperature. This is much higher than your typical halogen (2800-3200 K). What most people don't know is what this does to your color spectrum. Halogens make reds and yellows pop, or stand out. Guess what color all your warning signs just happen to be. Well with that said the 4000K bulbs no matter whose you choose will make red look maroon, and yellow look sort-of light tan.

I had a set of 4000K Xenon bulbs in my 97 F-150, they looked real cool and looking at the truck they looked like they were brighter, but driving was a different story.

Just a word to the wise, the Sylvania seems like a decent product, but buyer beware on all of the crap on e-bay and a lot of the other web sites selling junk.

Another thing to look out for, a lot of these bulbs are not DOT apporoved and you can and will get pulled over.

Look at the wattage rating and see if it's a true wattage or a "as bright as ___" rating. That's where a lot of the cheapies get you they say in big letters 80/100 watts. Well they aren't they are a standard bulb.

If you do happen to find a 80/100 watt bulb, beware unless you have the glass lens, you could be going down the road of burned lenses, and melted housings. Yeah they do burn hotter, 4000K remember.

Ok another thing about the 80/100 watters, if you do find them...Check your wiring and make sure you have big enough wire to handle the extra wattage. We don't need anyone stuck because their truck burned.

Stepping off soapbox now.

Oh one last thing, " Because these bulbs burn hotter, their life span is about 50 percent of a standard halogen."

That's straight from the Motor Trend article.