My resolution to the headlight problem.
590508
I am using this for my 600RR, and it works good with a minor quirk. Other reviewers have stated the motorcycle's under side of the headlight assembly or plastic front-end of the bike will actually support the bike up when the stand is in use. I've had this happen to me too, but I realized that the reason it did that was because there is a missing additional step. I know the product should not need any additional steps to get it to work right - so it's a small design flaw.

Helpful tip for everyone out there: you must first install your rear stand if you have one, otherwise have someone help you hold the bike - unless you want to scratch up or possibly crack any of your plastics/paint.

Ok, now to the additional step that fixes the front end issue, after you've got the front lifted up, grab the top of the bar (the highest point of the stand after your bike is lifted), and pull it back away and downward from your bike. This will lift the bike a little higher and keep your bike's headlight assembly from resting on top of the stand. At least this was what fixed it for me, your bike could be a little different.
2818211
For those asking, this (and the driver's side part) fit perfectly on my 2013 4Runner Limited.  As others have said, they are truly plug and play; all lights operate as intended.  I always thought the big red boxy taillights were ugly -- now fixed and look very sharp!

FYI, there's kind of minor a trick to installing them.  There's a groove on the forward part of the taillight assembly that you have to guide over a little plastic peg that protrudes from the vehicle.  Not difficult, just be aware because otherwise the taillight will not be perfectly flush with the body panel.

Also, I don't know if anyone else had this issue, but I had a little trouble getting the old ones (both sides) to come off after removing the nuts.  I ended up just pulling really hard, but someone else may have better advice.  Anyway, worked out fine and very happy with how my 4Runner looks now.
2899820
The light output is very good with those headlights ,however they burn out to quickly (one month).
I drive mostly at nights so I use headlights for long hours. I still believe they should hold much longer.
190300
My review is for the H4 Bi-Xenon 6000K kit.  This kit would have been really easy to install on a car, but I was working to put it on my motorcycle, so any challenges I encountered were because I wasn't working with the intended target.  It gives a fairly crisp cutoff of the low beam, considering that it's in a reflector housing, and the high beam has quite a good spread.  I still need to adjust my headlight some to be in just the right place because the bulb doesn't seem to be quite the same length as my original one (or my original light was out of position, which is certainly possible).  The brightness is very good, and the color (6000K in my kit) is just a touch on the blue side of white.  I think if I buy another kit for my car I'll probably go to 5000K for a more true white color, but I don't mind this color at all.  Some of the reviews have complained about problems after a little while so I'll be sure to update if I have any problems, but so far everything is working great.
2598776
Update: this last week I have noticed the bulbs themselves have turned bronze and are NO LONGER black. Be careful if you are looking for bulbs to keep thier color.
 I have custom headlights with Halos/Demon eyes and projectors with HIDs. These switchbacks are actually TOO bright. At night you can't even look at the headlight without squinting. A+++
1503849
I enjoy wearing them.  They work quite nice at night.  I would recommend to anyone who has trouble with the new headlights people have these days.
1355506
Great headlights. I installed one and have a image with how different it is from original. Ill try to figure out how to post image asap.
3470183
My headlight has already gone bad after ~9 months of use... A headlight should last for years, not months!
1925510
I was tired of being blinded by these new intense headlights that everyone seems to be installing, and they all seem to point to high. I Drive a Toyota Tundra which is no small vehicle, and all these little civics and small cars still blind me at night. my stock mirror did a fine job when manually switched but when in dark mode it was a very dark. This mirror solved that problem 100%. when it dims you can still see the road behind you, you are just not blinded by the intense beams. the compass is a nice touch, located in the upper right corner of the mirror visible in daylight and at night.
4336697
While taking a roadtrip, I looked down and noticed to my dismay that the dashboard lights weren't working. I wallowed in my frustration for at least half-an-hour before realizing I forgotten to take off these sunglasses as dusk was coming on. Yes, they are quite comfortable. :P
649571
First off let me say that after installing these headlights I was amazed at the difference in the appearance of the car. The old assemblies were faded and dull while these are clear and bright. Now the bad news. The passenger headlight was pointed almost straight up and the drivers side was pointed down quite a bit. While driving it almost seems like there was no passengers light with the drivers light illuminating directly in front of the car. I adjusted them as best I could but the drivers light won't adjust. The passengers side is adjusted but after getting it to what appears close to the proper position it now will not adjust. I will take a closer look at these assemblies next weekend and see if maybe there is a simple fix. I hope so since my original equipment has broken adjusters.
3530548
My dome lights were not coming on when the driver door was opened, and the auto lock/auto headlight was not functioning like it should, causing battery issues when the headlights wouldn't turn off. Replaced my failing door switch with this one and now the lights work like they are supposed to.

2010 FJ Cruiser
3972238
Worked great!  Replacement fixed the problem with no dash lights when the headlights were on.
914568
I think they need a few more years on perfecting the product. this kit only contains one LED Per light. As it shows in the picture they are mounted to the side or top,  this only allows half the headlight to be lit up. Also cannot seal the headlight back to its original state. You must leave the headlight open for the LED to stay cool. If you seal your headlight up the heat from the fan Will calls the LED to not stay cool and go into protection mode.  Tech-support said if the led does not burn out when I goes into protection mode it will not shine as bright and soon burnout. Race Sport technical support also said they highly recommend not using these lights projector lens. Hope this helps thanks.
3222998
My car's stock headlight was pretty weak plus my vision at night is not that good. Have been thinking about changing headlights for a long time. Found this kit, read the review and was thinking about installing them myself. But after reading the instructions and let the kit sit for over 6 months, I decided to have it professionally installed, because I really don't think I can do it based on the directions of the instruction. Not sure how people can install this themselves in 20 min, for my car, the mechanic had to take off my bumper to install them. But it's ok, that could just be my car.

Just got them installed a few days ago. The light looks pretty nice and bright, much better view than my old lights. I ordered 10K by accident (it kinda popped up by default, and I didn't really know what it means and thought that was the brightness, stupid me). The color is pretty blue, which I like. My mechanic told me it might burn out fast because it's too hot. So we'll see how long it will last. But so far so good, 'll prob just get a set of 5K replacement bulbs just in case.
3869132
So I was very skeptical about spending $60-$70 on the headlights. I wanted the best headlights available but my headlight already gave me a pretty good view of the road at night. I went ahead and got them just to see how goo these really were. Here's where the 4 stars comes in. I revived the HID kit but that's all I ordered (not the relay or warning cancellers) so when I put these in they worked for about 30 seconds then they would start to flicker and then go out. So I read online that the 55W need a relay harness so that they receive all the power they need so that they would not flicker.  But they still didn't fix the problem so I read some more that I needed a warning canceller. So that DID fix the prob but with 2 day shipping I had to wait 6 days till I could drive at night because I didn't know what all I needed.
  SO... Word of advice, do your homework before you buy to see if your car will need warning cancellers and I would definitely buy they relay harness for the 55W because I've read that they can actually mess up your whole electrical system big time if you don't.
SO.. All in all I love these and if your skeptical as I was in buying these I would say get them. It's definitely like I just mounted a sun on the front bumper and I still haven't gotten flashed for having my bright lights on. I have a 2011 Jeep Grand Cherokee btw.
Side note: I also wasn't sure about either the 5000k or the 6000k, I went with the 6000k and I'm very happy. Maybe just the slightest hint of a cool blue but very white. I don't think the 5000k would have been blue/ white enough for me. I wanted to stand out on the road from other headlights without but that stupid person with the BLUE headlight and I think the 6000k nailed it
3613615
I bought an hid kit 6000k lumens but the passenger side keeps flickering swapped lamp n module n even installed a 14.99 anti - flickering with no avail, don't know what to do next, I ran out of idea n never get any reply from the seller.