Andrew Gideon wrote:

For example, what is "post lighting" laugh?

There's a lighting unit called a post light. One end is a screw fitting that
is the same thread as the screws used for instrument mounting. The other end
has a tiny light bulb, which shines through a slit in the housing. The whole
thing is a couple inches long. The wires run through the center of the screw
fitting. To light a panel with these things, you replace one mounting screw
on each 3.25" instrument with one of these. Place them strategically so that
none of the lights shines in your face and all of the smaller instruments are
lit up. Connect the light power wires to ship power behind the panel.

George Patterson
To a pilot, altitude is like money - it is possible that having too much
could prove embarassing, but having too little is always fatal.