Switch off the power for the existing light fixture at the breaker box.
Use a screwdriver to remove the base from of the existing light fixture. Lower the old light fixture and unhook the wiring from the ceiling box. Unscrew the wire nuts with your hands and set them aside.
Strip the ends of the pendant light fixture. Remove approximately half an inch of plastic sheathing from the ends of the wires with wire strippers.
Screw the mounting bracket to the electrical box with a screwdriver.
Twist together the ends of the wires. Match the white wire in the light fixture with the white wire in the ceiling and twist the bare wires together. Screw a wire nut over the top of the wires. Repeat this process with the black wires and the ground wires.
Screw the pendant light fixture to the ceiling electrical box. Push the wiring up into the box before securing the fixture in place with screws.
Turn the power on to the light fixture.