Step 1
Locate the electrical box power source for the lighting circuit. Make sure the circuit is powered down and all lights are shut off.
Step 2
Cut a piece of NM cable and strip off the insulation to identify each of the interior wires. The black and white wires are wrapped in their own plastic sheath. The ground wire is the only bare wire inside the cable.
Step 3
Connect the wires to the corresponding color wires in the electrical box. Use the wire connectors to splice the like-colored wires together.
Step 4
Pull the loose end of the existing piece of NM cable, as well as one end of a fresh piece of NM cable and the wires from the first fluorescent fixture into the electrical box. You now have three loose ends of each colored wire inside the box.
Step 5
Use the wire connectors to splice together the three black wires, white wires, and bare wires together with their like-colored partners.
Step 6
Cover the first fixture with its cover and the electrical box with its face plate.
Step 7
Pull the loose end of the second piece of NM cable to the second fluorescent light fixture. Repeat the connection set up for the second fixture as outlined in Step 5.