First off this is what I am starting with.
A "big game hunter" hand held game I picked up at good will.
A spinning.... light.... thing....
an (I don't have photo shop) MS Paint mock up of how it will look.
Mounted the lights in the screen, on/off switch and two momentary pushbutton switches to power the two parts of the screen.
Giga Meter http://www.gbfans.com/fans/props/giga-meters/5823/