Hey Guys, I need some help-I'm making a DC power sourse from a computer power supply. I have read all types of helpfull info and have even done this before but this time I got a Dell power supply ( circa 2000) and I can't figure out which wire I need for on/off function. This model of PS does not follow the industry standards so I don't know what colors to use. Anyone out there have experience with an old Dell?