Wiring a 120V LED step light involves several steps. Here is a general guide:

1. Turn off the power: Before beginning any wiring work, turn off the power supply to the circuit where you will be installing the LED step light. This can be done by switching off the circuit breaker or removing the fuse.

2. Install the electrical box: Install an electrical box in the wall where you want to mount the LED step light. The electrical box should be sized appropriately for the LED step light and should be rated for use in damp or wet locations if necessary.

3. Connect the wiring: Connect the wiring to the LED step light according to the manufacturer's instructions. Typically, the LED step light will have three wires: black (hot), white (neutral), and green or bare (ground). Connect the black wire to the hot wire of the power supply, the white wire to the neutral wire, and the green or bare wire to the ground wire.

4. Secure the connections: Use wire nuts to secure the connections between the LED step light wires and the power supply wires. Ensure that the wire nuts are tight and secure.

5. Mount the LED step light: Mount the LED step light to the electrical box using the screws provided by the manufacturer. Ensure that the LED step light is level and secure.

6. Turn on the power: Once the wiring is complete and the LED step light is securely mounted, turn on the power supply to the circuit and test the LED step light to ensure that it is functioning properly.

Note: This is a general guide, and the specific wiring instructions may vary depending on the manufacturer and model of the LED step light. Always follow the manufacturer's instructions and consult a qualified electrician if you are not familiar with electrical wiring.