I'm about to install some Internal mods and needed to know how to power them, do I just tap into the hdd's molex? I'm not using the DVD drive so I was thinking of using the 12pin header but I don't know what is a safe amp limit. The mods would draw around 2.5A, how do you guys safely power multiple Internal mods like leds, temp sensors+display, wireless controller & remote control, wifi, Extra fans?