Running Wire Into Attic Through Garage Wall
One method is to run individual wires.
Running wire into attic through garage wall. And use semi rigid. When adding or replacing wiring in finished walls most electricians will attempt to make the horizontal portion of the cable run in the unfinished attic or basement crawlspace areas looping the cable down or up through the wall cavity across the floor or ceiling joists then vertically through another stud cavity to the next wall box opening. Make sure you use ul rated in wall wiring that meets local building and fire codes including cm cmr or cmp for computer networking and cl2 or cl3 for speakers. On the second floor run wires down the wall from the attic.
But running wire through pvc conduit mounted on walls and ceilings makes the job faster and a whole lot less frustrating. Always turn off the breakers in your electrical box before you begin to reduce the chance of an electrical shock should you accidently cut or drill into existing wiring. There are two ways to run electrical wiring on the exterior walls of a house or other structure. Even you are the first time to run security camera cabling you can install your security camera wiring through attics walls for your front back door reception room front back yard shop floor bedroom garage warehouse basement parking lot farm entrance even upstairs etc.
Select proper wire or cable. This is a two person job you need a helper at the other end to feed the wires into the conduit. If you will need to fish wiring through a wall drill a hole through the wood plate in the attic only. If you have access to your basement crawl space and attic you should be able to run wires without having to cut patch any drywall.
Cut the holes that the wire will pass through to enter and exit the attic. The proper way to run wiring on the exterior wall of a house. When necessary use existing ducts or pipe runs to get wires from the attic into the basement. To add lights and outlets you could spend days crawling around your attic and snaking wire through walls.
Cut a hole for each box with a drywall saw or a saw appropriate for the wall material then feed the wires down from the attic or up from the basement toward each hole using a fish tape or a fish stick. On the first floor run wires up the wall from the basement. Pull the wires through the conduit. Turn off the power.
To run cables vertically go into the attic or basement and drill holes in the wall plates above or below the locations of connection boxes. This video will show you tips how to fish wire down an existing wall from an attic space down to a crawl space.