Thx for the response. I am only installing one new wire.
*It is dangling too much.*
Which picture are you referring to (I've numbered the pics now)? There are several segments of the line.
For the line segment in pic #1, it's the existing line,
which runs (dangling) from the ceiling joist -- straight to the garage door. Is that a bad practice? If so what'd be a better practice?
For the line segments in pic #2 (circles 1,2) and pic #3 (circle 1), that's the new line I'm adding,
and it's still somewhat dangling because I want to make sure the line is running along the right spots the right way -- before I staple it down.
BTW, is it ok to run the new wire just along the top edge of the top plates (as shown now in pic's #2 and #3)?
I talked to someone in HD and he says best is to run the new line right in the middle of the top surface of the top plate
and then drill holes to go thru' when any piece of wood is in the way (unless the wood is real thin, then go over it instead) of the wire.
However, several ceiling beams end right on the top plate
(e.g. circle 1 in pic #2).
So do I run the wire over each beam,
run the wire under each beam (what it shows now in pic #2),
drill a hole each time the line runs across a beam so the line would run thru' it--instead of across the beam?
What I'm trying to figure out is how to run the new wire the right way--nicely, before I staple it down.
Want to learn how to run the wire in a garage... . Appreciate inputs on best practice... .
How many wires going through the top left hole in the open box?
There are 3 wires going into that top left hole in that box. They go to the left switch in the box (the switch's been removed by me for now) which is one of the two 3-way switches by the two doors in the garage that control the light above the washer/dryer.
On the right side of the box there's another line feeding the wire for the garage door opener.
The other single switch below this dual-switch box is also another 3-way switch for the outdoor lamp.
And below that single switch box (not show in the pic) is a 240-volt outlet for the dryer.
Feel free to suggest how to start over if feel needed.
My first try is to get this one new line running right first... .