need info on "Boeing Style MCP/Autopilot Panel"

[deskpilot]

hello again, Can someone help me find the instructions on how to connect the Arduino Mega to the Boeing Style MCP/Autopilot panel that fess built a few years ago. I built this AP and it was working well however some wires came loose from it and I don't know where to connect them to.

Thank You
Deskpilot.