How to Install a Backplate Dimmer Switch

Quick Answer

Installing a backplate dimmer switch involves turning off power, removing the old switch, connecting wires to the dimmer, mounting the backplate, and testing the setup. Always verify the wiring is correct before restoring power.

Step-by-Step Installation

1. Turn Off Power at the Breaker: Locate the correct circuit breaker for the room and switch it off. Use a voltage tester to confirm no power is reaching the existing switch wires. Common mistake: Forgetting to test after flipping the breaker. Always double-check with a tester before touching wires.
2. Remove the Old Switch: Unscrew the wall plate and then the switch mounting screws. Gently pull the switch out of the electrical box. Disconnect the wires by loosening the terminal screws or pulling wire nuts off. Take a photo of the existing wiring before disconnecting. This helps you remember which wire goes where.
3. Connect the Dimmer Wires: The Backplate Dimmer Switch typically has three wires: a black (hot/live), a red or black (load to light), and a green or bare copper (ground). Connect the dimmer's black wire to the house hot wire, the dimmer's load wire to the light fixture wire, and the ground wire to the house ground. Use wire nuts and wrap with electrical tape. Common mistake: Mixing up the hot and load wires. If the dimmer doesn't work or the light stays on, swap those two connections.
4. Mount the Backplate: Carefully tuck the wires into the electrical box, ensuring no bare copper is exposed. Align the backplate with the mounting holes and secure it with the provided screws. Do not overtighten, as this can crack the plate. If the backplate feels loose, use the longer screws that came with the dimmer to reach the box's mounting tabs.
5. Restore Power and Test: Turn the circuit breaker back on. Flip the dimmer switch to its on position and rotate the knob or slide the control to adjust brightness. If the light flickers or doesn't dim smoothly, check that you are using dimmable bulbs. A humming sound or flickering usually means non-dimmable bulbs are installed. Replace them with dimmable LED or incandescent bulbs.

Product Spotlight

• Backplate Dimmer Switch: The Backplate Dimmer Switch is a full-range dimmer designed for dimmable LED or incandescent bulbs, blending into your sconce's design. This all-in-one unit eliminates the need for a separate wall plate and dimmer, simplifying your installation while maintaining a clean look.