You can then splice on a new piece of wire make sure it is the same wire gauge and run the new piece from the junction box back to the fixture box.
Run wire above ceiling joist no attic.
How to fish an electric wire through a ceiling.
For vertical work you can cut about 6 inches below the wall ceiling joint drill through the top plat and then fish from the opening ion the ceiling.
If there is access above the light in an attic or kneewall space you can remove the wire from the existing fixture box and install it in a junction box.
Attaching an electric wire under a ceiling joist.
Attic access is not needed and you won t need to patch the ceiling after.
A 3 inch strip of drywall is enough to run receptacles around a room.
Whenever i do attic wiring i remove the insulation and staple it to the ceiling joist.
Adding a new ceiling light direct wiring an attic fan or installing any other type of overhead electrical fixture requires access to electricity.
It helps if there is a circuit already available in the place where you wish to install your fan but it s important to note that you can t simply take down a light fixture and replace it with a fan.
Learn how to install recessed lights without attic access with this tutorial.
Worst can you open the ceiling 5 inches from the wall and work from there.
Also learn how to install a wifi thermostat install a sliding tv platform and upcycle a light strip to a hanging pendant light.
I was also under the impression that if wiring is in an attic space that it may need to be derated because it can get very hot up there.