So far, so good. I just got done installing them, and they came with zero instructions as it says everywhere here, so it did take some time to figure stuff out. But now that I'm done with it, it was actually pretty simple, and I'll gladly explain to you what you have to do. BY THE WAY, these are the same as the Spyder ones, so you can go onto the Spyder website and lookup instructions on exactly how to replace your old ones with these. Though even the instructions aren't very specific on there.First things first, I know nothing about electronics and these types of things, so I'll (probably ignorantly) explain exactly what you have to do here. First you have to take the old lights out. It's really simple. You just pull a plug off the plastic backing in your trunk, unscrew 3 screws in total per light, and pull it right on out. I'm not going to get into details on how to unscrew the screws.. You can find a semi-handy but suitable video on how to do this on these Impalas on YouTube. Once you get the lights out, unplug the wire from the light. You have to pull up on a clip thing and then pull it right on out. Simple. Then, you will have the wiring harness in the back of the light. It's not as complicated as it looks. One goes to the brake light, one is the daytime running light kinda thingy (I'm so articulate, I know), and the other is the reverse light. You'll want to take the harness off. In order to do that, you have to take each light out one by one. You twist the.. thing.. to the left, and pull out. I don't know what they're called but it's the thing that keeps the lights in there. Be careful not to touch the actual bulb. I've heard around town n such that if you touch the bulb the oils from your hand can reduce the bulb's longevity. Maybe that's just a myth, I dunno. I would avoid touching the glass part of the bulb either way. Then, once you get the harness unscrewed, remove the harness from the clip that it's attached to on the light. This part can be a little tricky. What I did was I kinda wiggled it around and slid it off sideways. Pulling it straight out doesn't seem to work. You kinda gotta wiggle it off. Once you do that, the harness should be completely separate from the old tail light housing. You'll need that harness to attach the new tail lights. What you need to do now is remove the brake and whatever the other light is. Let's just call it the daytime running light. The brake light is the larger bulb, and the daytime running light is the smallest bulb. Keep the medium sized bulb in the harness, because that will be your backup light for the new housing as well. This new LED tail light housing does not come with an LED reverse bulb, so either you use your old one like I did, or you can replace it with an LED bulb. In order to remove the light, you just pull it right on out. Again, I suggest using gloves or in my case a paper towel to keep your hands off the bulbs. Guess it doesn't really matter if you don't plan on keeping them, but I kept mine just in case something goes wrong with these new tail lights. Anyway, once you do that, you will see on the new tail lights there is a thin kinda plugin looking wire sticking out from the back. That is essentially your new bulb. What you do is you plug that wire into the harness where you just took the bulb out. Make sure to line the black wires up with the black wires. You'll see what I mean. Obviously the larger wire fits into the larger socket (which is the brake light) and the smaller one fits into the other daytime running light one (though now that I think about it, I actually think that bulb is called the side marker light.. anyway...), It takes some strength to push them in, so don't be afraid to push hard. It'll kinda snap into place once it is in. Then, once you have everything properly attached, just push the harness plugs back into the proper slots on the new housing, and twist it to the right to lock it in place. Then, go back to the car and plug the harness back into the car's wire. It should just snap back into place. Then line up the lights and set them back into your car where it goes. Before screwing them back in on the inside of the trunk, make sure that they actually work. If you followed my instructions, you should be good. It all sounds complicated, but it actually is pretty simple. That's all there is to it.Only reason I bothered typing all that is because I wish someone else had so that I didn't have to figure everything out on my own. If you're considering these lights, and have the money for it, go for it. They look great and I highly recommend them. Build quality is just as good, if not better than the OEM ones. These LED ones actually seem to have more heft/weight to them, than the OEM ones. Which I'm leaning towards being a good thing. Only time will tell on how long these last. If anything changes, I'll be sure to update this review.