Hmm perfect place I heard was in the GBA slot part, it should be 3 pins left, and 2 right. Basically, from all the other places I know, this one is the only place that gives the LEDS full power w/o the need for a resistor, especially if you will put them all in parallel. The buttons, I suggest just buying a clear case, because you won't really find someone selling the button set by themselves. If you want, goto google and switch to the shopping google, and try to find a clear ds lite button set. Hopefully some random person or even company is selling them. I'd say the only problem which I saw a while back was trying to fit them so that they don't mess with your function, meaning you can push the A button and it'll still work and feel like a brand new DS, or better. The shoulder buttons are easy since they are hollow. You can either try putting them right under the buttons, or sticking them to the motherboard where nothing will hit the LEDs, but everytime I would close my ds lites up, they would having an annoying sticking problem with either the L or R buttons, so I'd be careful with that.