Removeable breaker panel

On the upper right are three dimmer circuit boards, a flaps
wig-wag flasher module, trim speed controlers,
and the control case for the
 AF 2500 engine monitor.

The unit on the lower right is a relay for the aux.
fuel pump
stick switch.  In the center is a switch/control subpanel.

On the 
panel at the left are 28 circuit breakers on 3 buses, a
service loop, various switches, and a
hobbs meter.

All of this can be accessed from the cockpit as needed by removing the panel.