Just posted this on the vintage machines board. It isn't really vintage, so I'm posting it here too.
If anyone knows of an led bulb that will fit a Husqvarna Megaquilter (the same as Janome 1600P and various others) I would be eternally grateful! According to the manual it's 12v, 5W, and it looks like this:
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I did manage to get one that fitted the description, intended for (from memory) a car number plate light, but it didn't fit very well, and didn't work.