Thanks to all for the answers. There is a key switch in the left side of the cabinet and I was guessing that might be used for resetting the counter after a payout but I haven't traced it out yet.
All red seemed a little boring so I painted the R green, the D red, the C yellow and the 25 cent black. The black doesn't show up very well so I may change that to a different color.
One of the extra counters was for a bill acceptor that was hacked in, and not hacked in very well I might add. I took it out and will leave it out. Not sure what the other extra one is for yet since I have not looked at the schematic to see what the original ones are for.
Getting all the lamps out is killing me! None of my usual lamp removal tools work very well. They just don't grab the bulb tight enough to pull it out. Is there a tool out there just for these sockets that grip the base so tightly?
I am looking forward to powering it up. Lots more cleaning to do (I found a family of 9 stink bugs living under the wires. Had to chase them down with my needle nosed plyers.) a couple of loose wires dangling around to figure what they are for and then I can power it up and see where we are. At one time mice had built a nest on top of one of the search steppers so cleaning has taken awhile with bleach water and other abatement chemicals, mask, gloves and all. Looking and smelling much better. No wires chewed, just a little chewing on some lacing cord. I need to order some lacing cord to fix some wire bundles. I normally just use tie wraps but want this to look as original as possible. Back 40 years ago lacing cord is all we used for wire bundles. It will be fun remembering how to do it right :).
The plastic playfield look to be in great shape and should clean up nice. Missin a couple lamp covers on the playfield but I have access to a Another Dixieland machine for parts so I should be able to get them from that.
Backglass is as perfect as I have ever seen on an EM machine. Do all bingo backglass' hold up that well?