Fan/Light switch

Old 05-18-02, 11:47 AM
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Question Fan/Light switch


Electrical box with 2 switches has 3 sets of wires.

2 sets have a white, black, red and ground.
The other has a black, white and a ground.

Currently all white wires are wired together as are the blacks. A black wire from each switch is connected to all the black wires. A red from each 3 pair is also going to a switch. And each switch is grounded.

One switch works with a wall receptacle and the other one turns the fan light on and off while leaving the fan motor alone allowing it to operate independent of the wall switch.

I bought a switch that dims the light a fan speed independently.
It has a blue wire labeled for light, a black wire labeled to motor and a blk/wht wire labeled with AC in.

Any help wiring this switch would be appreciated.
Old 05-18-02, 03:39 PM
Join Date: Sep 2000
Location: United States
Posts: 18,497
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The 2-wire cable appears to be providing power. The red wires are obviously carrying out switched power, and the black wires are carrying out unswitched power. You need to look at the wiring in the ceiling.

If the ceiling wiring has exactly one 3-wire cable, and no other cable, then proceed as below. If you see any more than one cable in the ceiling, post back.

Identify the switch that controls the fan's light. Identify the 3-wire cable whose red wire is connected to this switch. Simply connect the blue wire of your new switch to the red wire of this 3-wire cable, the black switch wire to the black wire in the same cable, and the black/white to the black pigtail that was connected to the switch you are removing. Attach the grounding wire that was attached to the old switch to the grounding connection on the new switch. Don't mess with any of the white wires.

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