If you are adding a switch to a finished wall see fish wires through walls for directions.
How to add a pull switch to a wall light.
Using a drill press make the hole for the switch in each plate.
I have bought some wall lights that dont have a internal pull cord on them as the lights are currently wired from the ceiling rose with a live feed coming in.
This is the hot wire and the one you ll connect to the hot side of the new double switch.
Then splice the fixture s black lead into the new black wire.
Prep for installing toggle switch.
Mark this wire black.
Tighten those screws with a slotted screwdriver.
All that to say that this is the way that one can macgyver any wall sconce to have a switch.
First make sure the toggle switch fits between the plate and wall.
When you tighten the screw it will pull the wire down.
Restore power and operate the light with the new switch.
To wire the ceiling fixture to the new wall switch first connect the copper grounding wire to the fixture.
Unscrew the two screws that hold the switch in the box and pull the switch and the wiring out of the box as far as the wiring will allow.
Take note of which wire causes the tester to light up.
Place the light switch inside the wall box and tighten the mounting screws with a phillips screwdriver.
After removing the black wire to the fixture s lead splice it into the new white wire.
To attach a wire to a screw bend the bare wire to the left and slip it over the screw.
Place the cover plate over the switch and secure it with the holding screws.
Insert a new section of electrical cable of the same.
With the light switch turned off hold the noncontact voltage detector against each of the wires connected to the switch.
Determine where the pull switch will fit inside the socket and drill a hole large enough for the nut attachment of the switch to fit through.