Dyno Power Converter

AC in, DC out.

The diagram on the back of the speakers tells me what voltage I need and what the polarity should be.

These speakers work well for only being 5 inches long.

The spade connectors go into the back of the light. The other connector plugs into the speakers.

Step one, solder the rectifier (the small black puck) to the capacitor (the blue cylinder). They are not connected except at the electrical connection; the capacitor is just snug against the rectifier. Notice the heat shrink tube ready to slide into place and cover the ugly soldering

This shows how the voltage regulator, on the right, will link the DC supply to the wires that will connect to the speakers.

More heat shrink tube to make things look good.

One last piece of heat shrink to hold it all together. I don't know how durable this will turn out to be.

This is the basic circuit diagram. I used a premade rectifier.

The common 7805 voltage regulator.

I picked this size at random. Some where there is a formula to tell me what the "best" size is, but device works, so this is close enough.