I was told by Farhen that I needed a decoder because my brights come on when I turn the fog lights on. This was on my 2007 Ford F150. They said they couldn't send me one because I purchased a used like new instead of brand new. So I returned the used one and bought a brand new set which caused the same issue. After I told them I installed the new ones and that I still have the same issue, they told me that they cannot afford to send me the decoder. So after all that run around they wouldn't send the item to fix the issue. I have dealt with other led companies on amazon and have never seen anything like this. Better stick with a company that stands behind their products and has better customer service. I will update this review if they do send me the decoder to fix the issue with the bright lights turning on when the fog lights are turned on.
I did receive the decoder eventually and it works good and no issues so far with the high beams coming on with fog lights. There was miscommunication and luckily I got everything resolved in the end.

I bought new headlight housings to replace my original housings that were fogged up and looked old and terrible. I decided to upgrade to all LED bulbs in the new housings.
First, I had an issue where I was trying to adjust the collar of the bulbs and lost the locking pin on one of them. I inquired to Fahren about a replacement pin or a size that I could buy myself, but they sent me a whole new pair of bulbs.
Once I finally got the housings installed on my truck with the bulbs I drove down the road and couldn't believe how bright they are. No flicker that I can see (so far). I did have to adjust them down because everyone I passed was flashing me.
These are super bright, I cannot yet comment on longevity but so far I'm happy with them.
New headlight housings along with all LED bulbs made my old truck look brand new.

They're extremely bright. However just recently after 5 months my passenger lowbeam has turned a blue hue it's weird having half white half bluish purple

Used them in a 1999 Suburban when I bought new headlight housings to replace the old yellowed ones. A few things to note:

First of all, both reflector and projector housings are very precisely designed for the specific HALOGEN bulb they are built for. That means they are designed for a bulb with a very thin filament that gives off light. Unless your LED bulb precisely replicates the thickness and positioning of the halogen filament with their LED emitter placement, you will not throw light down the road and simply produce glare that will blind oncoming traffic. We've all seen those cars head on, please don't be those people. It is probably impossible to replicate a halogen bulb completely, but these do a phenomenal job.

Two, these lights feature a rotating collar. That is there for a reason. You need to determine the direction the filament is pointing in the original halogen bulb, and these lights have to be angled EXACTLY the same when fully installed. With some housings, you may need to rotate the mounting collar to replicate the rotation of the original bulbs. If it's not rotated correctly, you will throw less light and more glare.

Three, as I mentioned before, no LED bulb will replicate the halogen one perfectly. You may need to adjust the headlights up or down (typically down) to throw the light correctly down the road instead of into the eyes of oncoming drivers. These are very bright (brighter than my stock factory LEDs in my BMW and Honda). You don't want to have these aimed incorrectly. Best thing to do is to turn on your factory bulbs against a flat background like a garage wall or door, note where the light cutoff is, and see if your LED cutoff is similar. Likely you will not need to do anything, but these are all things you have to check so that you don't create a dangerous situation for other drivers, and maximize your own headlight output.

I think these LED bulbs are every bit as good as the ones they replaced at about 1/4 of the cost. I only gave a three star for longevity because I don't really have info on that yet.