Twice as bright as the SMD they replace. They were originally purchased because the LED license plate light I previously had was Yorkim junk. The Yorkim only lasted about 2 months before they started flickering and a couple of the LEDs in the bulbs went out completely, not to mention being very dim. These Sirius bulbs are very bright and I bought another pair to replace the puddle door bulbs on my 2012 Cadillac CTS-V. The only problem I have is that the PCB connector is too thick for some OEM connectors and doesn't fit regular 194 bulbs. But much brighter than anything I've tried. They've only had them for about 2 weeks and haven't had any issues with flickering or "burning through". UPDATE: It's been 7 months since they were installed and they still burn great, no issues or flicker and I'm installing them now on my wife's 2016 Cadillac, SRX for map and puddle lights. Very bright for these applications
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