Started the installation of the headset jacks. Following a discussion with Joe R. I decided to place them in the sides of the center consol. Found out the due to how thin the metal on the sides of the console that the clamping areas needed to be beefed up and did so.
Determined that I'd have to add parts to ensure the wires stayed away from the cabling and cable pulleys.
Then - after installing them I discovered that I'd have to spend a little time figuring out how to orient the jacks and wiring to ensure that there wouldn't be any chance of interference between wiring and rudder cables. Not a non-trivial task that will wait until tomorrow.