Alla Lighting Dual Color 578 212-2 LED Festoon Bulbs, White/Red Switchback 41MM 211-2 214-2 CAN-bus Map, Dome, Door, Trunk, Stepwell Courtesy Lights

I would read these approximately six stars out of five.My SUV is a full sized vehicle with three rows of seating plus a cargo area. It was fitted with four lamp receptacles featuring incandescent lamp tubes. The quality of light they provided was minimally satisfactory at best. I don’t have any hard numbers to report, but I can relate that these LED lamps were a drastic improvement. Also, they will dim as the originals did.These lamps have the ability to change from a brilliant white light to red. I chose these specifically for the few situations where I want my night vision to remain unimpaired after I turn this light off. And to that end, they work beautifully. The only comment I’d like to make about the red is that it’s a little brighter than it should be, other than that it works exactly as advertised. What isn’t clear in the instructions is how to switch colors. It’s done by toggling the dome light on and off twice. When you do it rapidly, it will switch to red the second time you turn it on. My vehicle has a separate switch for each lamp in the ceiling as well as the collective dome light switch on the dashboard. It will also switch from white to red if you toggle the dome lights from the dashboard as well.I highly recommend these to improve the interior lighting, and decrease heat, production and energy consumption. They produce a brilliant, white light that does a much better job than the yellow hue from the incandescent lamps.Another plus is incandescent lamps have a much shorter service life compared to LED lamps. So, these will probably outlast the life of the vehicle.No trouble installing them whatsoever. I did notice that one of them appeared to be burned out on installation. It turns out that while it wasn’t polarity sensitive, it was very sensitive. How is positioned inside the bracket. So, if it doesn’t appear to work, try taking a close look at how it fits in the electrical terminal holders in your vehicle. Diagnostic tip: it doesn’t matter how it gets 12 V, the lamp will light up irrespective of the source of voltage. This is a quick and easy way to test it. If you have jumper wires, and, don’t look directly at it when you turn it on. They also don’t appear to be polarity sensitive. This means it doesn’t seem to care which way it was plugged into the socket, it would work either way.

Very bright and easy too switch the colors when I want

These work as intended. For me these are too bright for a dome light application. They will blind you if you look directly into them. So for a dome light that turns on when the door opens, they are too intense for an unsuspecting passenger.The color change works fine, it would be nice if you could set the default color of the light. For example if you wanted red at first turn on there's no way to do this, you have to cycle the power

Buy it

Yes, these switch between red and white just by turning them off and back on again. However, they will default to white if they've been off for long enough, which is fantastic.I was worried I was gonna have a couple dome lights that are sometimes red, sometimes white, but I don't think I've ever had the red turn on whenever all the other lights come on.Definitely a bit of a niche item, but I can see how some people would want something like this, especially if they do a lot of work in their car at night.

I just installed these lights and love them they work exactly as they should they're super bright super clear they don't flicker when my lights are going off because they have the dimmer when shutting the doors and my buttons work again