Wiring A Switch To A Light. From what has been described in this question it appears that a neutral wire is not available at the wall switch. Wiring a new ceiling light and switch from an existing power source.
Connect the source wire to the bottom terminal of the switch and the other black wire to the top terminal. It s likely you ll also need to replace the. Add an electrical box for the second 3 way switch in the basement.
Wire a switched outlet.
The source neutral wire is spliced to the neutral on the receptacle half of the combo device and to the white cable wire running to the light. The trick to replacing a three way switch is to mark the common or com wire on the old switch before removing the wires. The source neutral wire is spliced to the neutral on the receptacle half of the combo device and to the white cable wire running to the light. You should see plastic caps called wiring caps also called a wire nut with two wires running into each cap.
