Default [Q] Case Mod for Nexus 7 2 Help

I've been thinking about a case mod that I would really like to do, but I need a little help . If you have ever seen the iPhone mod where the apple logo lights up, then you will have some understanding of what I want to do. I have an idea what I'm going to do, and here's what ive got so far. Removing NFC and charging coil, dremeling out the lettering, put a diffuser over the letters, put led strips over the edges of the diffuser, and finally, relocating the NFC pad and coil to the back of the battery. But my question is, where do I connect the LEDs to so they turn on when the screen is on? P.S. sorry about the long read :P