I have a sculpture on hold that utilizes hand cranked magneto that the viewer must turn to see the interior of the work. The problem I first found was the magneto's would only generate enough power to light a small 12 volt bulb, that would be great but I need two 12 volt lamp bulbs. I was wondering if there exists a switch or relay that would work with the magnito to send power from a 12 volt battery when cranked, to the second more powerful bulb. Sorry if this doesn't make sense I am very uneducated when it come to electronics parts and verbiage. Thanks in advance for your time.