"John" wrote in message
ink.net...
Daniel, thanks for the reply. The existing fan and switch
have three wires, does that mean the fan itself is limited to
two speeds? Do they make speed controls that convert
this to a rheostat-type switch?

Use the high speed wire and the common. The low speed wire just adds extra
inductance in series - tape it up. A decent solid state fan speed control
will have a preset to set the lowest speed.
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N