Maybe somebody here knows, but I've got an older railroad brakeman's lantern with an incandescent bulb that I'd like to switch to LED.
The problem is that the polarity is wrong for all the 2/3/4 cell Mag Light conversion LED bulbs I've tried so far.
This railroad lantern has a 6 volt lantern battery inside, two bulbs, and a switch for running either or both at the same time. The top bulb is an incandescent flasher, under a red fresnel dome.
The bulb I want to replace is the main illumination/signal bulb, inside a huge reflector and clear lens. Same thing here:
Perhaps I disassemble the LED conversion bulb and try to wire it in reverse if there's room?