To replace this kind of switch, follow these steps: Turn off the power to the switch at the main circuit breaker or fuse panel. A 3-way switch is used on each end with one or more 4-way switches in between the two 3-way switches. If the light switch has a ground screw on it (usually green and at the bottom of the switch), connect it now. So the new switch has four wires. You’ll need access to the white neutral wires. Pull the switch and attached wires out slightly, taking care not to damage any wiring. Neutral: Standard switches do not require them, but the neutral wires will be present in the box. Normally when you replace a light switch, you would leave the neutral wires alone, but in this case, we’ll be connecting them to the new combo switch. It is important to understand how these switches are wired before attempting to troubleshoot or replace. Insert the light kit or the switch housing cap into the bottom of the switch housing. In this video I walk through the process of replacing a traditional toggle switch with a more modern Leviton Decora rocker arm switch. They do not have an on/off position like single pole switches. Follow the directions. Since the switch cuts the power on and off, there will be a black wire coming into the switch and a black wire leaving. Disconnect the old switch by removing the screws. In a double light switch setup, you will have multiple wires including one set each light fixture and … Unscrew the switch from the electrical box and pull it out with the wires still attached. Load: Based on STEP 4, label the LOAD wire that did not test positive for voltage. There are three types of wires that run to most switches: black wires that go to black or brass screws, copper or green ground wires attached to green or copper screws and neutral white wires. Twist the wire connectors back onto the two sets of wires if you removed a light kit from your ceiling fan. The other 4-wire bundle will enter the box from the top and have three colored wires (black, white, red) and a copper (bare) one. First of all we should connect the ground wires to the box. Now that the light switch is completely removed, we’ll need to prepare for the installation of the combo switch. Unscrew all wires. The hot wire is usually red, but can also be black. Below is a conventional wiring diagram for a 4-way switch configuration. Step 1 Turn off the electrical power to the three-way dimmer switch by turning the dimmer circuit breaker to the … (assuming it is a steel box). Before disconnecting the wires from the switch, label each wire with the provided labels. A wire that is bare, green, or yellow (or green with a yellow stripe) is the grounding wire, and the white wire is the neutral wire. Line: Based on STEP 4, label the LINE wire that did test positive for voltage. 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