I installed a 40mm fan on the GPU heatsink that is drawing power from the 12v on the DVD power cable. I'm also thinking of installing a couple 4'' cold cathode lights. How much power can you draw from the 12v DVD power cable before it becomes unstable?
its not smart to attach anything to your 12v power on the dvd line it can cause problems to your 360 and your dvd drive. get your 12v directly from the power socket .