Review on AUXITO 578 LED Bulb 41mm 42mm 212-2 211-2 578 Festoon LED Bulbs CANBUS Error Free 6-SMD 3030 Chipsets Xenon White Replacement for Map Dome License Plate Lights Lamps - Pack of 4 by Michael Wiley

They are very bright and really brighten up the interior of our 2005 Pontiac Bonneville. They were a bit tricky to install due to the slightly different size, but thin-nosed pliers will come in handy. Their only downside is the heatsink on the back. The heatsink is not insulated at the ends. So if your daisy chains are slightly bent inwards, they can touch the heatsink, short out and blow the fuse. If that happened the first time you installed it. To prevent this, simply bend the connectors and make sure they are tight. Another thing to note is that they don't dim very well, it's more of a gradual flicker and then they turn off.