yellow 12v
red 5v
blue -12v
black negative

test green and black to see if the power supply works open the power supply count the yellow cables take the same amount of red and add one more of black because it will go next to the green one, put the cables together by color, strip them and put them in a tab You will already have your power supply, to get 24v you have to put the negative of your device at -12v and the positive at 12v