H8/H9/H11 LED Anti Flicker Capacitor Error Code Computer Warning Canceller LED Resistor Canbus Decoder(Pack of 2)

I got some "CANbus error free" LED lights that turned out to have zero circuitry to actually make them CANbus error free and my only options were to return them and try to find others of the right specifications or just give up and deal with the headlamp system more directly. I went this way because it's very hard not to get LEDs that are so excessively bright police are likely to pull you over and there just aren't a lot of options in lights that actually match incandescent brightness. The advantages of a CANbus decoder like this are that they don't have to waste tons of energy (a load resistor literally just redirects enough extra energy to heat to make the LEDs basically use the same total energy as incandescent lights) which means they don't get super hot and melt things and they have voltage smoothing for PWM systems to prevent flickering and other such problems.So far this has worked just fine in my car. It wouldn't accept any LED lights on their own with the low beams throwing an error and refusing to light up and the highs just outright blowing a fuse with LEDs. I still have to get a CANbus decoder for my high beams, but I had no real troubles installing this on my lows and so far in my testing there have been zero problems. Both just worked right out of the box without me having to break them in or anything. I do have one minor complaint in that one side didn't seem to want to latch onto the OEM connector tightly at all and kept coming loose. I had to just wrap it with tape for now (you don't want to put glue on the OEM connector!) It's not hard to keep it together, just loose enough that it can come apart on its own.As others have said, these are a bit bulky. Make sure you can accommodate the boxes for them. However, they don't have the strict mounting requirements that load resistors do since they don't get anywhere nearly as hot. (Meaning you can place them near plastic.) I was lucky enough in that my headlight assemblies actually have enough room behind the reflective section to actually be able to fit these inside. Be prepared for the possibility that they may possibly not necessarily fit in yours though. I think most CANbus decoders seem to be roughly the same size though, so you may just have to be prepared to rig something up depending on your own hardware.The only true concern I have is possibly longevity. These do appear to use an electrolytic capacitor (at least in the pictures they provide -- I haven't opened mine up) and at this price solid state caps definitely seem unlikely anyway. This could potentially be a weak point for their longevity. A good LED light will probably outlast most people's uses for their car, but these may have to be replaced more quickly down the road. They probably will last quite a few years though (and LEDs are still better than incandescent lights when you don't overdo it) so it's probably worth it in the end even if they do die sooner than might be desirable. As the title says, only time will tell for sure.UPDATE: After a few days the other one started coming loose too. It does seem like the input is wired backwards because there's a small part to snap onto on the other side of the connector that these are probably meant to use, but can't since they're backwards. (And yes, polarity matters. I get a lamp failure warning and the lights fail to light if it's connected the other way.) I used high temperature tape on both and hopefully they'll hold in place that way for a long time. Hopefully. I think the purpose of these is to be "plug and play" so to speak, but they really aren't just as they are. You have to glue or tape them to ensure they last. It might be that car manufacturers just aren't consistent with which way around they wire the bulbs since incandescent bulbs don't care, but it seems there are more the other way around than not based on the comments so far. Perhaps the maker of these could have the snap part on both sides to ensure a more universal compatibility.

Learned the hard way this was needed. Hyper flash or bulb goes out when car is fully turned on.Great unit fixed the problem on my headlights that claimed to have a processor chip that works great on most models, guess just not mine. Problem solved with this unit.

First item was defective, exchanged, now everything works on my 2017 Dodge GC. No Faults in ECU stored, no flickering. I am happy with them. Check the wiring prior installation!

They came as described. Although, they both completely stopped working 2 months after the install. Just outside of the return/replace window😒. Polarity on all plugs were backward, so I couldn’t use the attached clip to secure the plug. I had to tape them to keep them plugged into my HID connections. The connections on 2 of them were really lose and i was unable to secure them. I would love to have them replaced and give this company another chance.

Bought 2 sets. Low beam set works mint. Highbeam...not so much. Passenger highbeam works good for about 5 minutes then starts flickering.Both hi and lo beams shut right off like they should. Only problem is that light flickering after 5 minutes being on. Overheating issue? Not sure.

Alright, so... after pulling both front tires and wheel wells (2015 Jeep Cherokee.) I finally plugged these suckers in. At first my new LEDS didn’t even turn on, gave it a minute and nothing.While i had the Jeep stripped, I looked and thought may as well invert the sides (pos/neg) and to my surprise my leds turned on without warning of bulb failure.I think the wires were reversed, or I’m about to burn something out. We shall see.PRODUCT WORKS, however it’s a bit sketch. I don’t have my trusty tester on me as I’m away, or I’d test current. *shrugs*

This product is exactly what we needed to stop some budget LED lights from flickering. I almost returned the LED lights that I bought from a lighting sale, they were considerably cheaper than the pair I bought for my work truck, but my wifes car needed new headlights, so I grabbed them, only to find that there was not an inline canbus device on them. I figured maybe they are just a different technology then the ones I bought for my truck, but nope, turns out the company would rather sell their LEDs that wont work on most cars without the anti flicker canbus. I'm guessing the same company sells the adapters sepertalty. But all in all, with this product it makes the LEDs work perfectly and there is now zero flicker.

Does what is says but very bulky will not fit in my headlights so I can put the back cover on so for now im leaving them off till moisture starts going in them.