Review on 4Pcs 42Mm 5050 3SMD Canbus Error LED Festoon Bulbs - Perfect For Car Interior Dome/Map/Trunk/License Plate Lighting (Blue) by Aravind Joshi

VEHICLE APPLICATION: 2018 FORD F-150 exterior bed/cargo lights, mild climate, vehicle nightly garagedUSE TIMEFRAME: May 2018, began failing Jan/Feb 2019, approx 8K miles on-vehicle use, illuminated nearly exclusively for brief entry/exit and not extended cargo loading illuminationPOSITIVES: As others mentioned fantastic lumen brightness and all LEDs worked right out of box. Very reasonable price. No "code" of faults thrown due to decreased power load.NEGATIVES: Short-life (see timeframe) as they fail light began to flicker and dim as each individual LED begins to fail. Failure not power related. occurs when vehicle is and isn't running. Failure first began in winter months with coldest outside temps (lows 20F-35F) but failure continued to get worse even AFTER weather spring temps rose to 60F+.OVERALL: I'd proceed with caution. Maybe I got a bad batch - or they just performed poorly in my specific vehicle application but even at a affordable price you still have to consider the cost of YOUR time to frequently install and replace these bulbs. Light illumination (when working) is GREAT, but when they begin to fail its embarassing and not very useful. Item description states 12mo warranty - these failed within 10mo of use, but I am 2 weeks over the 12mo anniversary of my order date. I will contact company to see if they will stand behind the product. IF SO I will note the level of customer service I receive.