While handling fiberglass insulation wear gloves eye protection and a mask that covers your mouth and nose.
Fishing wire through walls tools.
If there is no cover press the wire against a stud and use it as a guide.
Flex bits and glow rods are the go to tools pros use for fishing wires.
A decent stud finder is a must have for every wire fishing job but.
Thread wires past insulation.
Strip about 6 inches of outer sheathing from one end of the cable then hook the conducting wires and bare copper grounding wire through the loop at the end of the fish tape blade.
The tools you need.
Bend the wires over then wrap several loops of electrical tape around the wires and the end of the fish tape.
Fishing electrical wire through walls check the whole wall cavity with a stud finder.
Flex bits are great for.