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1) A ceiling fan motor
only has 3 speeds and 1 OFF position......thus comprising 4 wires. Not sure why yours has 6 wires?
2) Unfortunately, there is no wiring
standard when it comes to ceiling fan pull switches as each manufacturer and even the same manufacturer with different model numbers can be different.
3) The only consistent wire color amongst fan manufacturers is the black wire and that is typically the hot wire feed into the switch. The 1,2 and 3 positions corresponding to the wire colors can vary.
4) Did you purchase an exact replacement switch and make note of which wire colors were terminated on the original switch?
If the replacement switch is a generic pull chain that was purchased from Home Depot or Lowe's, there is a 50% chance that is may not work. Even though the exterior of the replacement switch may look similar to original switch, the internal switching patterns can be different. Once again, an exact replacement switch is needed. Otherwise, the fan speeds may not work and/or may not work correctly with a generic replacement switch.