Find your electrical breaker box and turn off the power running to the outlet you are replacing before beginning the task to avoid injury.
Plug the circuit tester into the outlet. A red light will illuminate if the outlet is still receiving power.
Remove the screws from the cover and plug with your screwdriver and lightly pull the plug from the wall about three to four inches.
With your tape and pen, note the origin of each wire so you can know where to connect them on the new plug.
Using your screwdriver, remove the wires from the old plug and reattach them to the new plug.
Reattach the new plug and cover with your screwdriver.
Return to your breaker box and turn the power to the outlet back on.