Assembly and Installation Steps Step 5 Lock together Step 4 Connect all white wires(-) from the arm together, and connect all black wires(+) from the arm together. Do not mix the black and white wires. There are two same main wires, they are thicker than the black and white wires. Connect black wires of the arms together with one of the main wire. Connect white wires of the arms together with the other main wire. The wires connection is finished. Step 3 (2) Attach the finial to the threaded iron part.