Wes wrote:

Also, when you join a single stand wire
to a solid you're supposed to first wrap the strand end around the
solid
wire, then bend the solid wire over the stranded wire.

If you bend the wires over like that, the wire nut won't work as well.
A good quality wire nut has a spiral springinside it that squeezes the
wires together and holds them under tension. If the wire nuts that
came with the fixtures don't have springs in them, throw them away and
go buy good wire nuts and use them. There are different size wire nuts,
get the right size for the wires that you are using. There is usually
a chart on the box showing how many of each size that you can join with
each wire nut. There are grounding wire nuts (Green) that have a hole
in the end. You leave one solid wire long, it goes through the end.
After you tighten the wire nut, the exposed wire end goes around the
ground screw.


Stretch