GRV T10 921 194 C921 13-5050 SMD Wedge LED Bulb Lamp Super Bright Warm White DC 12V Pack of 10

I’ve been buying these for years for under counter kitchen light in my home. They usually don’t flicker, and when they do, I just pull it out and replace. Unfortunately, when you go to replace, the exact lights won’t be available and they are all slightly different brightness/light color. Either live with a mix of lights, or replace the whole gang. And I ignore that these aren’t for home 120 V power, put I’ve been happy for 7 years now. The old halogens were supernova hot and melted our vitamin lid which was near it. These are cool and safe LEDs, very happy w these and all others I’ve bought (and they do burn out gradually so they last 1-2 years of almost all day use).

Not as bright as I expectedNot as bright as I expected

Picked these up for our Travel Trailer to replace the last batch that have all died. None of these that I've tried last anywhere near as long as they are advertised to last, so plan on buying more and have hot spares handy. These are bright and have whiter light which I like vs. the typical yellowish LED or Halogen bulbs. They are super energy efficient, which is the biggest reason I buy them as we are boondockers and run the trailer on batts overnight and on Gens 3 - 4 hours / day. We'll see how long these last, but so far, only parts of 1 season, maybe 8 - 10 3 - 4 day camping trips of use.

So far, great! Bright but not too bright.

When installing, sometimes have to flip over the bulb to get it to work

Product works fine. Nice warm color. Installation is quick and easy.Only problem was, I ran through the entire box! (Almost every light was burned out in the RV). Consequently, I will be ordering more for spares.

I replaced all of the incandescent bulbs in my old popup camper and what a difference! The old incandescent bulbs would really load down my battery, getting very dim on long outings. These new LED bulb don't make a dent in my battery life, and stay super bright. FYI, the LED bulbs do have polarity and are not marked, so if you plug one in backward they will not work and you'll have to flip it around.

Quick/simplified rundown for LEDs (without getting too technical). LEDs themselves do not interfere with radio/tv signals. The voltage regulator in some bulbs is what causes the interference: meaning if the input voltage shows a range (say 8V ~ 24V or similar), then good chance you'll have interference with certain signals. On the flip side, a bulb without an input voltage range (12V or similar) does not have a regulator and will not interfere with certain signals. Although a constant 12V may not always be supplied from your power source (i.e. RV batteries can reach 15V during charging). This could make a flat 12V LED bulb flicker or even burn out. This is just a general understanding of LEDs and is not meant to be a definite guideline for all LED bulbs.Now these specific bulbs do NOT have a voltage regulator and will NOT cause radio interference. I installed 15 of these bulbs in my RV: all overhead lights and bed reading lights. No interference whatsoever, including the lights right above the TV/Radio. The Warm White "GRV T10 921 194 13-5050 SMD Wedge LED Bulb lamp" matched the original halogen 921 bulbs very well! Although all the 921 halogens should all be replaced at the same time as they are not a perfect match to keep half-and-half. As for flickering and/or burning out some of the LEDs, I cannot comment on that yet. These bulbs were installed while I was hooked to shore power and there was no flicker, and they weren't on long enough to have any of the individual LEDs burnout. I haven't had a chance to test the lights on various stages of power source or bulb life. But so far so good, 5 stars hands down.I installed Cool White "GRV T10 921 194 13-5050 SMD Wedge LED Bulb lamp" above my kitchen sink, stove and in the bathroom. I wanted a brighter/cooler bulb for these areas. There is radio interference in these brighter ones, but I will only be using them for meal prep and bathroom use. That's why I used the Warm White "GRV T10 921 194 13-5050 SMD Wedge LED Bulb lamp" everywhere else - no interference, and a better match to the original 921 halogen bulbs. No complains with any of the bulbs, just need to know what you're looking for. Also, LEDs only work one way. If the wedge bulb doesn't light, try flipping it 180 and re-inserting it.

At first I purchased a different set of bulbs here on Amazon that were quite a bit cheaper; they were disappointing in colour and brightness.These bulbs were twice the price but worth every penny. The warm white bulbs were very close in colour to the incandescents that I was replacing. These bulbs were also at least as bright and possibly brighter. These are very nice bulbs.From a power usage perspective these bulbs draw about 0.16 amps (160mA) compared to 1.4 amps (1400mA) for the incandescents. This is a pretty significant power savings when running your RV or device on batteries.It is worth noting that these bulb are quite a bit taller than the equivalent incandescent. They may not fit in all fixtures depending on clearance.

Installed all 10 in a RV trailer to replace the old style wedge bulbs. All worked fine, no duds. Note: These (like most) LEDs are directional, so if it does not work, pull out of wedge socket an turn the light a half turn and re-insert. Light is a nice warm (not blue) colour that is very similar to the originals just a bit brighter which is great for a RV trailer that can be a bit on the dark side. Had ordered a few others styles before but this one is the best replacement so far. Lights are warm to touch but not hot like the old lights which had made the light fixtures very hot to touch. Highly recommend. Also happy to find with the new lights, they don't cause the inverter fan to run, so things are quiet as well as using less power.

I ordered 3 packs of 10 led bulbs to replace all the bulbs in my travel trailer. The old ones were C921 hologens. I have 26 light sockets. They fit fine everywhere although ther are about a half inch longer than the original bulb when installed. They are as bright or brighter than the original halogen. I had to reverse about one third of the new led bulbs to make them work. Only one bulb out of 26 would not work. I noticed the wire leads were compressed more than the others so I bent them up a little to ensure better contact and the led bulb worked. So 26 out of 26 worked just fine with a little fiddling. They throw next to no heat. Also the electrical draw must be very small. I say this because the cooling fan on the inverter in the electrical panel would come on before if I had 4-5 Hologen bulbs on at once. The fan never came on when I had all 26 led bulbs on. A side note, when I originally shopped for led bulbs at the trailer dealer store I ran into a gentleman who had just paid 800$ to switch all the bulbs over to LEDs from halogens. My application would have been very nearly as much if done through the dealer as well. My cost buying these was 96$ all in with four spares. So far I couldn't be happier with my purchase. These are a real deal.Off grid camper

These LED lights look and work great! I've replaced all 30 of the 921 incandescent bulbs in my travel trailer with these LED lights and they are slightly brighter and not as yellow as the original bulbs. Overall I'm very happy and all of the LED lights worked without any defects. I have not had the chance to put any significant hours on them yet, so time will tell how long they will last. I've used a number of LED lights and although these are considered warm white and not natural white, I have no complaints as to their colour. As for the power consumption, you can power about 14 of these LED lights for the same power as one 921 incandescent bulb, which is great if you're concerned about saving battery power in you RV. Shipping was quick and packaging was also very good.

I purchased 10 of these to try in my trailer before buying enough to replace them all since I HATE cold white / blue lamps and didn't want to be disappointed. The colour isn't the warm 2700k yellowish light you get from the incandescent bulbs you're replacing but a bit over 3000k as specified. This is the same whiter light colour you get from higher temperature halogen lamps, and while their measured overall brightness would be less than what I replaced they appear to be about as bright since the eye is more sensitive at the higher temperature. This said, as point sources of light from certain angles they appear significantly brighter the old incandescents they replaced and could be distracting if you have a low ceiling. In other words, the room may not be as bright but your eye may be drawn to the fixture as you walk around if you've got a lower ceiling.All of the lamps I received worked fine. As others have noted if it doesn't work at first pull it out, flip it over and plug it back in. If it still doesn't work you might also need to bend the wires out slightly to make contact with the fixture socket contacts. I only had to do this for one of my fixtures but it's something to keep in mind.Will I buy more? While I prefer a little warmer colour I likely will but I won't use these to replace the reading lights over my bed, in part because of the colour but mostly because they'd be blinding to look at.