Constantly Burning out bow light

[Basketcase]

I do NOT have an electrical engineering degree, so I clearly don't have the background that you do. I would like to understand this because I find it interesting. I know my way around a fluke, and did 12v electrical work for 15 years and this never came up before. What exactly is it that happens to the bulb that kills it? I would not think lower current capacity of the circuit would cause MORE heat to the bulb. I would think less, which would extend the life of the bulb. Yes?

[FLexpat]

I'd use an LED bulb instead of incandescent (filament type). Incandescent bulbs can get pretty hot in small metal enclosures without any ventilation.