I'm working on a diy dynamo powered light for my Raleigh Sports with a somewhat vintage look. I saw somewhere online a guy who used a triple led mr16 bulb hooked to a dynamo hub as his headlight and seemed like it worked pretty well.

I don't know much about circuits so I'm trying to keep it inexpensive and simple. I grabbed some small chrome bullet auto/motorcycle running lights at walmart that take an mr16 bulb. It seems that the bulb I have only accepts AC. I had a bridge rectifier in my wiring and it wouldn't light up. I would also like to eliminate some of the flickering at low speeds, which I believe is done with a capacitor. But, doesn't a capacitor need DC?

Should I be trying to find a bulb that accepts DC or is there any other way to smooth out the flickering while still running the AC from the hub straight into the light?

I'm even able to use my headlamp bracket!