Help with Light up button

I just finished hacking my 360 pad http://www.slagcoin.com/joystick/pcb_diagrams/360_diagram1.jpg

My question is I got one of the seimitsu 24mm clear plunger buttons. I want to use it for the guide button and stay lit while the controller is on. How do I go about doing this? Or can I be directed to a thread with this info cause I couldnt seem to find it.

I’m not sure if this helps, but it’s along the same lines as what you are looking for, sorta, maybe…

http://www.llamma.com/xbox360/mods/xbox%20360%20Controller%20LED%20Mod.htm#Lighting%20the%20Dome

It might help. It might not.