Upgrade T15 LED Bulb Extremely Bright 921LED Bulb, 1200 Lumen Error Free 921 912 T15 W16W LED Bulb 24-SMD 3030 Chips for Backup Reverse Lights, 6000K Xenon White (Pack of 4)

Bought these bulbs to put in my cargo light over the bed on my truck. Even though my cargo light takes a 921 bulb, these kept blowing fuses no matter how I installed them. After a closer look, I noticed that these bulbs have four terminals on them instead of two on a standard 921 bulb. This was causing a direct short and blowing the fuse. So make sure that these will work in the socket you plan to install them in. They can only be installed in a two terminal socket instead of a four terminal socket like mine was. Only rating three stars because customer service was extremely prompt and gave me a full refund in less than 12 hours.

I used these for my Ram 3500 third break light and cargo bulb replacement. These do NOT fit my reverse lights though as they are a different smaller bulb. They do seem to work well for the third break light and cargo lights though. Lights are pretty bright and have been working well for over a week so far. Cheaper then one replacement bulb and since the third break light and cargo light assembly uses three bulbs I now have one spare to keep in the glove box as this is a 4 pack.

Easy to install. If it doesn’t light up, just flip it and reinstall it. BUT!! It burned out. Replaced it and the second one started burning the cable. The contact burnt and melted. Replaced the wiring and the third bulb didn’t work at all.

Replaced dull factory cargo and 3rd brake light in 2003 f150 supercab. Literally a night and day difference. Exceptionally bright brilliant white light for the cargo replacements (almost offensively bright). The 3rd brake light replacement was very much noticably brighter. As I continue replacing the incandescent bulbs in my truck I will definitely be using this brand throughout more of the transition. I recommend these bulb replacements.

Been running them for a while now and they’re holding up well. The first series of led chips sometimes flicker but they still work and don’t burn out and flash like cheaper ones I’ve had before. I think the bit of flickering I have with them is that the voltage/current leveling on these bulbs is not strong enough for what my car is putting to them.

I have these in my 2003 F250 as backup lights and they are very bright. I have had trouble seeing behind me but these lights make it better. When you install them if they do not work, flip them and they will come on. I am also tired of replacing incandescent lights and these should last a long time. I recommend these to anyone looking for brighter lights. They fit perfectly into a standard reverse light socket. Since the pack comes with 4, I can use these on two different vehicles for the same low price.

Update - I contacted the seller and they issued me a new set, a different batch because they look a little different - I am sure these will be much more durable. Thanks! Would buy from them again.I put these on my truck and they are nice and bright. I must have gotten a bum batch because half of them burnt out in 2 weeks.

Bulbs are quality and super bright. I had to wire in a 25w 6ohm resistor on my 2017 Cadillac XTS to get them to turn completely off, but they are definitely good bulbs.Resistors: Ucreative 25W 6ohm LED Load... https://www.amazon.com/dp/B075T9HDDZ?ref=yo_pop_ma_swf