Cottonbell 578 LED Bulb 41mm 42mm 212-2 211-2 578 Festoon LED Bulbs 16 Colors RGB with Remote Control Replacement for Map Dome License Plate Courtesy Lights Lamps (Pack of 4)

I installed this in my fiancé's '06 Dodge Charger dome lights. They fit perfectly. She has them forever set onto purple because it's her favorite color. They're very easy to install, so it made for a fun first car mod for me and her to do together. They've been in for over 6 months and have worked great. They aren't too bright, which is probably because of the dark color that she chose to keep it on, but they've never made it impossible to find something in the car. The incandescent bulbs do a kind of "fade out" effect when you turn the car off. The LEDs do not do this, they just immediately dim to the point of barely visible, and flash like crazy. Not that big of a problem when your turning off your car, and it doesn't bother her at all. If it's something that will bother you, you might want to look into an incandescent with a colored lens.

These are great!. Just installed them on my 310 Sundancer. Way easier than re-wiring in new lights. Couple points, one is you must use caution installing them. These are a circuit board with Festoon ends, put the pressure on the silver festoon ends not the board. Two, yes they are not as bright at the incandescent bulbs they replaced but it’s negligible. I wish the remote didn’t have to be pointed directly at the bulb to change modes but only an inconvenience if you are trying to use a mode like flash or fade.

They're a little buggy and could be brighter. They flicker when they first turn on, probably because my car un dims them to full brightness rather than just turning them on when you open the door. I have other colored leds that don't change color that I'll probably switch back to because they were brighter overall. These seem kinda cheaply made compared to them and those were cheaper than these are.

Not very bright. Otherwise they work good

I'm giving two stars rather than one because they are cheap and I didn't expect much. But I'm still disappointed. I'm used to LEDs being brighter than incandescent, these are MUCH dimmer. The white is made by the RGB colors combined and it pretty blue/cool, but OK, just DIM. There's no way to set R, G, B brightness individually to make your own colors and the colors on the remote are just garrish and ugly for the most part. There's for instance 5 buttons on the red to yellow range, but only the one below red is orange, the next a very orange button is slightly green yellow. The next yellow orange and full yellow are yellow green and light green. So, the choices of warm colors you would want are all useless except for one ok orange that's still too saturated to be an appealing warm white. These are maybe ok as dim mood/accent lights if you are into garish colors and don't need precision matching to other lights. These are basically useless for overhead dome lights or as usefully bright lights to actually see clearly by. One of the three I tried stops responding to the remote moments after it comes on, I have to turn it off and back on to have a few seconds where it will accept remote commands. The remote has to be put right up near each light to work, there's no changing more than one at once. I really should only give one star given one isn't even working with the remote as the others do. The more I think about it, these are very poor quality even at $18 for 4. Actually, I AM only going to give one star and I'm probably going to return these. They are just BAD and I have no confidence in their long term reliability.

Fit perfect

I installed these as cab lights in my Kenworth and was very impressed with how bright and rich the color is. For the price I think they are a great value.

Great product. The colors are vivid and very seductive. Excellent for getting some love on. I replaced all the lights in my van with these bulbs. Highly recommended. I've delt with the seller before and they responded fast and helped me out when I had a slight issue with an order.

2 bulbs worked as advertised. 1 stuck on strobe mode 1 stuck on blue lights. Very dim light.

Nice changing colors for each bulb

When opening car door they tend to flicker while turning on and remote doesn’t always work

Bit pricey but they light up very nice

I wrote the seller as one was dead an wouldnt work so now i got to take them out or buy another pack alittle annoyed as i was super excited for this.