The first two pictures show the finished panel and the panel mounted in the plane. Those red wires will eventually connect to switches or the fuses/circuit breakers directly. Yes, you can get circuit breakers that plug right into the ATC sized slots!
The last two pictures show the remaining remote units. The one on the left is the ARINC concentrator and the one on the left is the ADS-B in source. It is dual band and talks directly to the PFD for traffic and weather and will also talk to both Garmin Pilot and Foreflight on my iPad.
