Above is the original electrical panel with some additions by the previous owner.
Above is the current navigation station. The only original thing left is the AC breaker.
The unit at the upper left is a self-designed GPS and Systems Monitor. Just below it is another aluminum panel that is a self-designed MP3 amplifier. The single control is for volume, and the rectangular hole is a place to plug in and insert a portable MP3 player. The small meter is an ampmeter.
Above is the inside of the hinged panel.
Side view.
Inside detail.
Schematics. (On each page, net names are followed by numbers in parenthesis. These are page numbers that reveal source or destination of each net.)