One black one white and a separate ground wire that may be bare copper or is sometimes wrapped in green. Shut off the power.
Replacing 60 Year Old Light Switch Which Wires Go Where
Replacing an old light switch. Unscrew and remove the switch plate. Then use a voltage tester to make sure that the circuit is dead. Remove the cover plate. In older systems that. The most basic three way switch setup has two switches that connect and control one light. Turn off the power to the switch at the main circuit breaker or fuse panel.
The necessary supplies though are critical so make. You wont need many tools for this job. How to replace your old outdated 3 way light switches step 1. Unscrew the switch from the electrical box and pull it out with the. If the breakers in the box are unlabeled use. Before beginning in earnest to replace a light switch go first to the electrical panel and cut power to the room where youre going to be working.
To replace this kind of switch follow these steps. Inspect the quality of the wires. Turn off the power by switching off the circuit breaker that controls the circuit feeding the switch. There will be three wires. If any of the wires seem weakened trim and re strip the end of the wire to meet your needs.