Question about Speed Ceiling Fan 3-speed Switch By Westinghouse 77021

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Changing the 3 speed switch on my westinghouse ceiling fan

I believe I am returning the wires to their appropriate positions but I only get a hum from the fan when I turn the main power back on.

Inside the fan I have purple, yellow, gray and black
The switch the hardware store sold me has black, red, white and blue

Westinghouse quoted me the 77021 switch but the local hardware said they don't buy these replacement parts from Westinghouse and that the one they recommend will fix it.

They say even thought the wire colors don't match, as long as the L,1,2,3 are spliced appropriately it'll work.

It's not working!
Where do the the purple, yellow, gray and black correspond in relation to L,1,2,3?


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De-coding the nonsense..........
Ceiling Fan 3-speed Switch By Westinghouse 77021
Black = L = Power
Brown = 1 = Low Speed
Purple = 2 = Medium Speed
Gray = 3 = High Speed

Posted on Aug 18, 2009

  • Bill
    Bill May 10, 2014

    This was very helpful, watched three others that did not help, so thnaks a million for this.


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If you are careful and take the hot coming into the fan from the power source and connect it to the colored wires one at a time, you will be able to find which one is high, med. and low. Then connect them. Hot in is L, 1 is low, 2 is med, 3 is high

If you need further help, I’m available over the phone at

Posted on Jun 27, 2009


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