Review on 🚗 LEDKINGDOMUS 578 212-2 LED Bulbs 4Pcs Festoon Bulb 41mm 42mm 12SMD 1210 Chipset 6000K White Interior Map Door Dome Light 560 211 211-2 214-2 - High-Quality LED Bulbs for Car Interiors by Eric Speers

They're definitely brighter than the regular bulbs they're designed to replace, and they run MUCH cooler, so you have less to worry about the bulb's heat damaging the flashlight's lens or body. They also use less power, making it harder to accidentally drain the battery if the door is left open for long periods of time. But the metal tips are slightly smaller in diameter than some of the bulbs they can replace, so it's sometimes necessary to bend the socket contacts together to get a solid connection. And they are polarity sensitive; If they don't work when first installed, it usually means they have to be pulled out and twisted end-to-end. Last but not least, the fact that some cars use less electricity than a regular lightbulb means the car's electrical system might think they don't exist at all; If the machine is "smart enough" to "know" this, it may complain that your lightbulb has burned out, or refuse to even try to turn on the light. There is a way to fix this with an extra resistor, but this is a task that may be beyond the skill of a person unfamiliar with electrical work, especially indoor lighting where the space to connect it may not be available. Oh, and a note to people selling this item: they keep using the word garland. I don't think it means what you think it means.