Hey i think your tut is great, I'm not very good at circuts though, only problem i have is the grounds? I don't see any on the circut picture you had it says underneath it though that instead of using a p1 just solder the wire to the right audio on the xbox 360 but there is two wires connected to the p1 in your diagram, where would that second wire go? and would one end be connected to the 12v source like you showed or a ground, sorry if this is confusing, Thanks for you tut and help!