NOTE!! I TAKE NO RESPONSIBILITY FOR ANY DAMAGES OR ERRORS ETC. THAT MIGHT OCCUR WHEN USING THIS TUTORIAL
After i had read the tutorial, i thought i could be done easyier.
Then i looked inside my controller and xbox and saw something nice.
1: get a push button (off when down)
2: install it like in the original tutorial (drilling hole etc.)
3: connect a wire from the one leg of the button to ground in your controller
4: connect the other leg of the switch to the yellow wire in the controller (the extra wire M$ has put into it, for our pleasure)
5: open your xbox and locate the yellow wire.
6: connect the yellow wire to + volt inside your xbox (you can get it from the front panel)
Then it should work. It sounds strange, but M$ is actually making a connection between - and + when you push your on/off button on the console...
btw.. if you wan't to enable Dolby Digital with a standard AV pack then do this:
1: Pull the AV plug out of your xbox
2: Look into the plug. There you'll see some small holes in the middle
3: Find a small piece of wire (1-2 cm)
4: twist the wire and put it into hole 5 and 18 (making a connection)