Join Date: Jun 2006
Bikes: 03 Raleigh Professional (steel)
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I'm not sure what you're asking here. To replace it, look at the old bulb under a magnifying glass. It should have some numbers stenciled on the glass. There are replacements for just about any bulb ever made, you just have to be able to tell which one you're replacing. Older flashlights had screw-in bulbs. Two D-cells means a 3V bulb.
If you mean you want something brighter, the limiting factor is the batteries. You could get a modern light (and modern batteries) that uses an MR11 halogen lamp and cobble up some way to mount the lamp inside your headlight.
Stupidity got us into this mess - why can't it get us out?
- Will Rogers