Spent quite a bit of time thinking about the map box. Got the hole cut and finished assembling the map box. For now it is attached to the panel with clecos, which is surprisingly sturdy. My current thinking is to attach it to the panel with nutplates and figure out some way to support the rear maybe from the firewall.
Made the pitot/static line connections from the wings to the cabin lines using quick-connects. The lines will need to disconnect from inside when the wings are removed.
Moved the ground buss out of the way of the power panel and reconnected grounds. Everything back there is pretty much engine related still. Most of the remaining wiring should go to the power panel.