I tried to check out the MKII wiring last night, but the back door key was not the right key! I guess I'll be calling the locksmith - Mr. Drill.
I did look closer at the wiring connectors though. Sure enough, 4 buttons go to the kick harness. I just couldn't get into the pcb to look at that connection.
I read the manual last night for the darts and did some troubleshooting. I turned it on again first off to tinker. I noticed that the monitor came too life a little bit. It appeared to be getting some interference though. It would scatter when the sound tones came on. That screams at me BAD CAPS. It may be worth rebuilding just for the learning experience. It didn't come up the second time though.
Anyways, I took apart the dart board and removed all the broken tips. I also reset the dipswitches to the settings I want. The game was booting directly into a previous game it seems, but now it coins up. Without the monitor though, I don't know what is going on. It seemed to crap out while trying to blindly start a game. Maybe my voltages aren't up to snuff.
The next step is to hook up an external monitor. I have to make a connector, which isn't too hard. Basically I need a molex header, and strip the end off an RCA plug and put it on the header. Then it is as simple as plugging it onto the CPU board and plugging the other end into a TV. The monitor mentions an RF modulator, but it isn't necessary in this day in age - TV's have had RCA inputs for years!