To properly wire a Leviton dimmer switch, first turn off the power to the circuit. Connect the black wire from the dimmer to the hot wire in the electrical box, the green wire to the ground wire, and the red and white wires to the remaining wires in the box. Secure the connections with wire nuts and install the dimmer switch into the electrical box. Turn the power back on and test the dimmer switch to ensure it is working correctly.
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