Turn off the power to the switch at the main service panel, then remove the switch cover plate.
Remove the mounting screws holding the switch plate to the electrical box.
Holding the mounting straps, carefully pulled the switch out from the box.
Test for power by touching one probe of the neon circuit tester to the grounded metal box or to the bare copper grounding wire, and touching the other probe to each screw terminal. The tester should not glow.
If the neon circuit tester close, there are still power entering the box. Return to the service panel and turn off the correct circuit.
Disconnect the circuit wires and remove the switch.
Test switch for connectivity and buy a replacement if the switch is faulty.
If the circuit wires are too short, lengthen them by adding detail wires.
If the wires are broken or nicked clip off the damage portion using the combination tool. Strip the wires of various about ¾” of bare wire at the end of each wire.
Clean the bare copper wire with fine sandpaper if they appear darkened or dirty.
If the wires are aluminum, apply anti-oxidant paste before connecting the wires.
Connect the wires to the screw terminals on the switch. Tighten the screws firmly, but do not over tighten. Over tightening may strip the screw threads.
Remount the switch, carefully tucking the wires inside the box. We attached the switch cover plate and turn the power on to the switch at the main service panel.