
I bought two of these two flashlight bulbs which I have had for over 15 years. One flash worked right away, but the second wasn't so easy to get working. Obviously the design of the second flash was of reversed polarity. Since the old ordinary light bulbs had no polarity, everything worked before. It didn't work with this LED bulb because the flash was reverse polarity. Well after spending a few minutes modifying the flashlight so that I could put the batteries in reverse order everything worked and the light from the flashlight was brighter than ever. It was an amazing update.

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