Turn off the home’s main circuit breaker or locate and turn off the breaker that controls the circuit where you plan to install the motion-activated floodlight.
Slide the electrical cable coming from the wall thorough the strain relief tab located on the back of the round outlet box that you plan to secure to the wall. The floodlight attaches to the outlet box.
Fill the hole where the wires come through the wall with silicone caulk to prevent water from getting into the wall.
Press the round box against the wall. The strain relief goes into the hole in the wall. Secure the box to the wall with 2-inch-long decking screws using a screwdriver.
Cut the cable extending out of the round box to a length of 6 inches with wire cutters. Strip the casing off the cable with wire strippers and then strip approximately 1/2 inch of the coating off each of the wires in the cable.
Thread the black wire coming from the floodlight to the black wire coming from the wall and secure the wires together with a wire nut. Wrap the wire nut with electrical tape to keep the nut from coming off over time. Repeat this with both white wires and then secure the green or bare wires together. If the wire coming from the wall is bare and the wire coming from the light is green, secure the green and bare wire together.
Tuck the wires into the round box and then secure the floodlight to the round box with the machine screws supplied with the light.