Help with Light up button

I just finished hacking my 360 pad

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…

It might help. It might not.