Awasome 2 White Wires 2 Black Wires Light Fixture References. Bulb1 and bulb2 white and black wires connected to light switch black and white wires. The white neutral connects to the white of a cable going to the ceiling box.

These are the power supply wires and connect through the switch and back to the electrical panel. They are also used when a wall switch controls an outlet. Web you can install bathroom light fixtures with two black and white wires the same way as you would install a single light fixture.