Ok, I'm back w/ more info. I need to add a light fixture to a switch
that currently controls 1 receptacle in the same room. Power goes to
the switch and then to the receptacle which is an "end of run". There
are no other receptacles/lights on this switch. I have full access to
the wiring via the attic. Do I connect the light fixture wiring to the
switch,the receptacle or should I do junction boxes in the attic. What
is the "right" way of doing it? Pros/cons of different ways?