Bests & Worsts Reviews from Amazon

I bought both the 9003 and the 9006 for my 2005 Toyota Tundra. These are excellent bulbs, but there's a few things I didn't find covered in other reviews. First, the high/low 9003. No one really explained this, so I will. The bulbs are removable from the locking plates. You install the plates into your headlights, then slide you dust covers on the bulb, then they push in and turn to lock into the locking plate adapters you previously put into your housing. This makes for a simple weather proof installation. The only thing is, the bulbs will push in and lock into the adapters right side up or upside down. I got both of mine in upside down the first try, and the beam looked funky. Easy to tell when you flip from high to low and back. I rotated the bulbs 180 degrees in the adapters and they now are perfect with an awesome beam pattern in my housings. Five stars for the 9003. Now for the 9006 bulbs. These are a replacement for my fog bulbs. There are three things that need to be addressed. First, the polarity of the plugs were reversed for my Toyota. I had to flip the pins in the plugs. Second, they do no lock into the housings very well at all. They were loose and rattled around. I was afraid they would eventually turn and fall out while driving, so I had to make shims to tighten them in the housing. Third, fog lights have a very directional housing, and the bulbs are clocked 90 degrees off. I was getting very low output at first, but once I realized the LED was not pointed correctly in the housing, I found the bulbs are actually a friction fit in the adapters, and could be rotated until the LED is pointing through the reflector opening in the housings. Because of the fiddly fitting and reversed plugs, Three stars for the 9006. These would have been five star lights IF they fit the housings better and it was explained in some fog housings you would need to clock the bulbs for proper output. Now with all of the adjustments and fitting done, both the 9003 and 9006 are excellent. Pure white and very bright. They put my previous Sylvainia Silver Star halogens to shame. No more yellow light here. All in all, these are very white, bright, and high quality bulbs. I really like the fact they use a high quality heat sink instead of a fan, too. Fans fail, heat sinks don't. I just wish the directions for fitment and adjustments procedures would have been more clear. Also, these have only been in a couple of days. I sure hope they hold up to the Florida heat and weather. If they do, these are unbeatable for price and quality.