From Light Fixture Replacement · Step 7 of 13 · Video by fordummies

Showing 0:23–0:34 of the source video.
The old fixture's base is typically secured to the ceiling electrical box by screws or decorative nuts. Carefully unscrew these fasteners to detach the fixture from the ceiling. As you do this, be prepared to support the weight of the fixture, as it will likely hang from the electrical wires. It is highly recommended to have a helper at this stage to hold the fixture while you disconnect the wiring.
Goal: Detach the old fixture base from the ceiling, exposing the wiring.
This project provides step-by-step instructions on how to safely replace an existing ceiling light fixture with a new one. It covers crucial safety precautions like turning off power and testing wires, disconnecting the old fixture, connecting the new wiring, and finally mounting the new fixture and restoring power.
Once all wires are disconnected and the fixture is no longer supported by wiring, carefully lift the old fixture away from the electrical box. Lower it down the ladder or have someone assist in removing it from the work area.
This project involves safely removing an existing light fixture in a two-story stairwell and installing a new one. Due to the height and electrical work involved, safety precautions are paramount.
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