Q: I want to replace a ceiling fan/light with a regular light fixture. The cable from the switch box to the ceiling box has three wires—two identical blacks and a white—with one of the blacks connected to a mysterious blue wire from the fan. The light fixture I want to install has only two wires, one white and one black. What’s the best way to wire the new light?
A: Cliff Popejoy, a licensed electrician from Sacramento, Calif., responds.