That was easy even for me to understand. The volts are jumped up but the amps go down. Like when I switched my electric air compressor motor from 110 volts over to 220 volts. I sort of remember ohms law from school. And it is not the volts but the amps that can kill you I think.
If there is a bulb question I will send them to you. Check the tech board from time to time as there are lighting questions.
http://www.renntech.org/forums/index.php?act=idx
About all I know is that too much heat will discolor/burn our plastic headlights. I have seen them.