I installed the led wiz software the led didnt light up. There are 2 wires coming from the led which on do i touch the usb shell with? Also which terminal screw do i use for the other one?
No, you use a different piece of wire. You are, as a test, jumping ground from the USB shell to the terminal on the LED-Wiz where your LED is connected. This should cause the LED to light, if you have it connected properly. If it lights when you do this, your software will also be able to light the button.
This is only a way to test your wiring, and you don't want to connect anything up this way in any solid fashion.