So I've noticed that there's "alot" of people, talking about how they would add LED's to their NES pads, that lights when a button is pressed. Sadly noone seems to do anything about it, but one guy who just added LED's that was on constantly...
So I desided to something about it :-P
Attached: Small video of me demonstarting that it works...
Step 1: Disassembly
Unsrew the casing, and take out the curcuit board.
Step 2: Drilling
Deside where you want your LED's, and drill your holes. Use a drill bit that is just as wide as the LED's, so you can just press the LED's in the holes...
Step 3: Fire Up Your Soldering Iron
1 - Solder a 100 ohm resistor, to the positive pin of the LED.
2 - Solder wires to the LED (pic 1)
3 - Add some hot shrink tubing, and shrink it.. (pic 2)
4 - Make as many as you need.
5 - Add the LED's to your pre-drilled holes, and bend down the pins. (pic 3)
6 - I've done a little "pin out" for for all the buttons. (pic 4)
7 - Solder the nedgative wire of the LED to wichever button you want. (pic 5)
8 - Now solder all the positive wires to the white wire (5V+) on the other side of the curcuit board, and bend them away, so you can close the NES PAD. (pic 6)
Allthough the LED only will be lit for a short second, you need atleast an 100 ohm resistor. If you do not use a resistor the LED will draw too much current, and the NES PAD will not be able to send signals to the NES, thus your buttons will not work.
You can add LED's individually to all the buttons, but if you press more than 3 buttons at a time, they might use to much current, for the NES PAD to work properly..
Step 4: And Now My Love, Your Finished
Hook that NES up, and game on :-P