How to Attach a Two-Wire Lighting Fixture to a Three–Wire Supply. Turn off the circuit breaker at the main panel that supplies power to the three–wire cable intended for the light fixture. Test the wires to verify that no power exists using a voltage tester. Cut any exposed copper from the red wire with wire cutters.
Most light fixtures have two electrical wires with colored insulation and a copper. 3. Take off the cover, and note the color of the wire insulation for the wires that
2-wire and 3–wire Icons This application note explains the difference between 2-