Note: If the wall is covered with drywall or plaster, most of the work consists of running cable and perhaps patching the wall afterwards. Safety tip: Before starting, shut off power to the circuit. Editor’s tip: If power runs to the receptacle, use two-wire cable to make a switch loop. Mark the white wire black to indicate that it is hot. Editor’s tip: If two cables originally entered the receptacle box, connect the grounds and mark the white switch wire black. Attach the black switch wire to one brass terminal. Splice the remaining black wires and the white switch wire together with a pigtail. Connect the pigtail to the other brass terminal. Connect the remaining white wires to silver terminals.
