Not gonna post a picture of mine out of embarassment and because I don't have a picture.
But mine was just a skeleton PC case that just sat in there. Not tied down or secured in any way. The cab was heavy enough that no amount of wrenching on the controls could shake it.
My wiring was equally shoddy. Just I just left the back of the case off and had a power cable coming out for both the PC and monitor. The monitor power switch was always left on so you could turn it off by unplugging it. I plugged it into a power strip and used the power button on that for it.
The PC I had to reach inside the coin door, which I left unlocked and with no coin mechs, and turn it on by pushing the button on the front of the case.
The ipac connected directly to the PC via PS/2, and I used a wireless usb keyboard and mouse for other functions.
A PC speaker served as an amp and fed audio to the cab speakers. I snipped the wires to the speaker itself cause I didn't like the way it sounded mixed with the cab speakers.
My cab was pretty ghetto.

It's torn apart now while I play with my new presentation monitor.