I'm automating some system installs and I need to install a prefPane.
installer -pkg xxx.pkg -target / that I use for installing .pkg files.
Simple preference panes can be "installed" by moving them to
and "uninstalled" by removing them from there (just tested it with Secrets).
You can "launch" them using
Many preference panes install additional daemons/agents or system components upon launch or user action. You should be able to use AppleScript to perform these UI actions, but they're custom to each preference pane.