Switch Shuntings

Pull chain switches often have identical outer shells but very different internal shunting. For a method of testing the internal shunting click here. Click here for a Testing Method to determine the internal shunting.
Below are four switches used in Gulf Coast Fans over the decades. The first one SW200nn is commonly found as a replacement switch at mass merchants and home centers. These switches are used in most basic and older ceiling fans using taps in the motor's winding to control the speeds. Most Gulf Coast Fans use a Dual Capacitor and the second switch, SW300nn, to control the speeds. Prior to the removeable switch cup, a Transformer and the Double Stack #913 was used to control the speeds. Even earlier models used a Choke and a Commander switch. The Commander switch was sometimes used on the taps in the motor winding, instead of SW200nn.

Mark and ID	1st Pos - Off	2nd Pos - Hi	3rd Pos - Med	4th Pos - Low	Wiring	Appearance
SW200nn Numerous Makers '1' Over Chain Numbers in Order					L - Black 1 - Brown 2 - Purple 3 - Gray
SW300nn WELL TEC or SANTA '1' Over Chain Numbers in Order					See Variants for specific wiring L - Black 1 - Gray 2 - Yellow 3 - Pink
Double Stack #913 Used with Transformer Top layer is thicker (3/8") than bottom layer (1/4") Top Layer . . Bottom Layer					Top L - Brown 1 - to Bottom 2 2 - Purple 3 - Gray Bottom L - Pink 1 - empty 2 - to Top 1 3 - Black
Double Stack Commander Used with Choke or Taps Both layers are 1/4" Thick Top Layer . . . Bottom Layer					Convert to Double Stack #913 with Transformer.