In short, here is what you need to do:
- From the bunch of headers in the front panel, locate the two headers labelled "POWER SW".
- Connect the header with the white and black wires to the input pins on the LCD as shown in the picture above. Note: you should not need to remove the front panel and disassemble the LCD as stated in the forum thread as you should be able to see it through a hole in the panel.
- Connect the header with the red and black wires to the power switch pins on the motherboard.