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When it went out the last time, did you replace it with an inexpensive bulb? If you did, they usually don't have a long, lifespan.
I hardly ever ride at night but last summer I was on the Norge and the lights were really dim so I had to use the high beams. On further investigation I realized both lights were out and of course a jump to conclusions was in order and assumed the worse and checked the wires thinking they were burned out......anyway, both lights had gone bad after 7 years of use.
I have a pair of the originals without the shielding if you want them..