Bests & Worsts Reviews from Amazon

Despite the seller's claim that this LED provides 240 lumens, I measured ten samples of these T10 bulbs at approximately 160 lumens. I also measured the current at approximately 129 mA which at 12 volts is about 1.5 watts. This equates to about 107 Lumens per watt. By comparison, most LEDs are between 60 to 120 lumens per watt, and the present state of the art is around 200. Regarding brightness, #194 bulbs are typically around 24 lumens, #168 bulbs are around 36 lumens, and #2825 bulbs are around 50 lumens. Regarding specifications, the specs I have seen on the 3014 chip set indicate that 24 chips have the potential to produce around 312 lumens. Accordingly, the general lessen in this is to not trust that all LED bulbs are designed or built to operate at the maximum chip-set ratings. Also, my observation is that few sellers report actual measured lumens, and many sellers simply report the maximum rating per chip multiplied by the number of chips. I suspect because some sellers exaggerate the lumens this way, others feel the need to do the same to be competitive. If a seller claims that a one watt LED bulb provides 400 lumens, this is beyond the present state of the art, and it is more likely that the output is between 60 and 120 lumens. Regarding CAN-Bus compatibility and being error free, CAN-Bus compatibility simply means that the automobile contains a current sensor that senses whether the bulb appears to be drawing some level of current representative of the operation of the original bulb. Ever since the use of the CAN-Bus, it then became possible to report such an error from a sensor over the CAN Bus. Some older cars also had sensors but reported the errors using other wiring. Regarding bulb failures, the CAN-Bus reporting system is more typically utilized on more essential lighting like headlamps, stoplights, and taillights, and less likely on festoon type bulbs or interior bulbs. Also, technically the only way a replacement bulb can be guaranteed to be error free is for it to draw the same or more current as the originally specified bulb. For example, a 4 watt #194 bulb draws about 0.27 amps (270 mA). And although the threshold for error detection may be significant less than that, it is also possible (though unlikely) for that threshold to be above the 129 mA drawn by this bulb. In this respect, although claiming CAN-Bus compatibility for a #194 bulb may be essentially true, the compatibility can become less likely for higher wattage bulbs like #2825 that draws 0.37 amps (370 mA). I cannot attest to reliability or longevity.