More in Electrical
Shut off the power to the light circuit at the main electrical box.
Use a drill/driver to remove the mounting screws holding the fixture in place, then remove the fixture (Image 1).
Unscrew the wire nuts on the ends of the exposed wires and use a circuit tester to be sure the power is off. Detach the wires from the fixture.
The wires extending from the junction box in the wall may be “pigtailed,” or attached to other wires. If so, leave these wires connected — exterior lights are often wired together in a series so all can be turned on with one switch. The wires of the new fixture (Image 2) will be attached to these interior wires in the same way as the old model.
On flat exterior surfaces, install the neoprene gasket (Image 1) behind the fixture to prevent water from seeping into the back. This fixture is designed for wet locations so the gasket is not needed. Although most exterior light fixtures are waterproof, check to be sure that the model you've selected is suitable for wet locations.
Strip about 3/4” of insulation from the ends of the new fixture wires and twist them onto the wires extending from the wall junction box (black to black wires, white to white wires). Secure each splice with wire nuts (Image 2).
Position the fixture over the junction box. Some fixtures fasten directly to the box, while others fasten to the wall. Use a drill/driver to tighten down the screws, taking care to tuck all wires into the box and not over-tighten the screws.
Open the cover panel on the fixture base to adjust the light settings. Most fixtures have high, medium and low sensitivity settings (for maximum security, select high sensitivity). Time settings, which determine how long the light stays on when activated, generally range from a few seconds to several minutes.
Screw the bulbs in place and restore power to the fixture at the breaker panel. To test the motion sensor, place a piece of tape over the light sensor (most motion-sensing lights will only illuminate at dark). Walk back and forth in front of the unit beyond its operating range, gradually moving closer until the unit senses you and turns on the light. The light should remain on for the time you set. Adjust the unit’s range sensitivity, if necessary.
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