I have a kicker zx400.1 to my computer power supply. You need to jump the green wire to a black or just connect it together to get the power supply to turn on. The green and black should be on the 20 or 24 pin harness and for the amp the 4 pin molex run the yellow wire to battery or constant and black to ground and jump a wire from the yellow to remote to turn it on. I'm running my amp with gains all the way down and my walls are shaking