Pros: Great! Very bright! I absolutely love having this in my car. It's not only bright, but has a cool bluish glow which gives a unique look to my car. Actually DOES dimm!

Cons: Quite a few cons, if you can over look it. First is that it is quite a bit wider than a bulb (obviously) so you have to make sure your application can accomodate the size. Luckily there was enough space in my dome light to work. Second is that it was hard to get a good connectin to get it working the firs time. So it wasn't as easy as putting it in and seeing if you got it in the right way. You have to fit it in then fiddle to make sure that it's not just a bad connection instead of being hte wrong way in. Lastly, obviously you have to get it in the right way as it's an LED and biased that way.

Other Thoughts: It actually DOES dim, although it does cut off abruptly. It's still better than either all on or all off.

Bottomline: If you can overlook the cons which are fairly minor and it fits in your application, it's great!