1 Start by turning off the circuit breaker to the fan. 2  Next, remove the cover on the fan housing or the globe light so you can access the switch, and unscrew the nut on the outside of the switch that holds it on.3  Pull the switch out of the housing from the inside, leaving the wires attached. Start by turning off the circuit breaker to the fan. 2  Next, remove the cover on the fan housing or the globe light so you can access the switch, and unscrew the nut on the outside of the switch that holds it on.