Disconnect all wires from the old switch by loosening the screws and disconnecting them.
Dimmer fan switch wiring.
Switch off the wall switch as well.
If you are installing a dimmer that has a removable knob remove the knob from the dimmer by gently pulling outward.
Turn off the power for the room with the ceiling fan at the breaker box.
Carefully tuck the wires back into the electrical outlet box.
Further pairs connect the wires to the dimmer switch wrapped the joint with electrical tape.
Eric the concern here is that you will need a speed control switch that will be rated for both ceiling fan motors.
Then test the dimmer switch and if that works tight fit the unit back into the wall being careful not to twist and bend wires.
Wiring a replacement dimmer switch.
How to wire a ceiling fan with a dimmer switch 1.
A dimmer switch for the lights will be available in several watt sizes.
Follow the manufacturer s instructions to hook up your dimmer fan switch at the switch box.
Houses wired with plastic sheathed cable almost always have bare copper ground wires that you ll connect to the toggle dimmer switch.
If a rewired switch is causing a circuit breaker to trip there is most likely a dead short between a neutral and hot wire a dead short on the wire to the light fixture or two separate circuits are wired to the same light switch.
If you locate this switch then both ceiling fans can be wired from one switch.