Twin-X: Steal away! In fact, I may have the psd's for you to take a look at if you would like (in 640 x 480 though).
I apologize for the lack of posts in a while; as everyone here probably knows, once the thing is playable, it must be "tested" for a few hours/days.
So here we go.
Buttons in-place with LEDs standing erect (A 3/16" hole was drilled into the bottom of each button for a press-fit).
LEDs wired in parallel, each with the resistors that were provided (these are from GGG).
I didn't want to take any chances with blowing-out the LEDs, so I threw-in a 5v voltage regulator I had laying around, along with a switch (in case the lights must be turned-off). This is wired to a molex connector connected to the PSU (this is to the 5v line of the molex; the 12v line powers one of the fans).
Microswitches wired; the tilt pinball buttons were later removed and replaced with hole covers, as they were in the way of buttons on the top and it refused to fully close. *Reminder: measure twice, cut once!*
Interfaced with a GP-Wiz Eco40:
Back panels (from the inside):
Flex-ATX PSU (the ATX PSU I had was a bit too tall, even de-caged; nabbed for $19 shipped on ebay)
Radeon 9200 on a right-angle AGP extender (it didn't quite fit vertically):
Here, the videocard support brace I made can be seen; I just wasn't comfortable with the videocard just flopping around without it. Also, the hard-drive and the "inlet" fan can be seen.
Lights on; in actuality, the buttons are much brighter than they appear here.
And a long-exposure one for fun: