I live in Chicago, which means our home is wire pulled through conduit rather than Romex. I am trying to replace a single switched ceiling fan and I can't tell what all the wires are for.
The old installation was a single switch that controlled the light and fan together, however, when I opened the box, there were extra wires that I think are meant to control the fan and light separately. I'd like to wire a double switch to the fan and light if I have the right wires already present.
In the switch box when I open it, there are: -two blue wires connected to the bottom of the switch -one yellow wire connected to the top of the switch -two white (neutral) wires nutted together in the switch box
In the ceiling box where the fan is installed, there are: -one yellow wire attached to the fan and light wires -two neutral wires connected to the fan/light neutral wire -two blue wires nutted together in the ceiling box.
I am guessing the blue and white wires continue on to another fixture or outlet, but nothing else is connected to the switch in question. Any ideas what I am looking at?
The switch box:
The ceiling wires: