This is the basic circuit diagram. I used a premade rectifier.
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The common 7805 voltage regulator.
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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.
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AC in, DC out.
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The spade connectors go into the back of the light. The other connector plugs into the speakers.
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These speakers work well for only being 5 inches long.
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The diagram on the back of the speakers tells me what voltage I need and what the polarity should be.
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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.
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This shows how the voltage regulator, on the right, will link the DC supply to the wires that will connect to the speakers.
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More heat shrink tube to make things look good.
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One last piece of heat shrink to hold it all together. I don't know how durable this will turn out to be.
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