I am replacing a overhead light with a ceiling fan for a nursery. There was only one switch, so I was going to be okay with just having both the fan and light on the same switch, but when opening everything up, there seems to be a lot of wires in here. I believe they had a fan before (but I am not sure). The original light at two blacks hooked up to one orange in the box and two whites hooked up to 4 whites in the box. The box also has 4 blues hooked up to each other and nothing else. The switch has 2 black wires (though pretty clear what is going on here) and the orange is to one, but the blue wires are now hooked up to the switch and the whites just pass on through. It seems to me that maybe wire colors got switched in the wall somewhere? Does it seem reasonable to be able to put the ceiling fan to the blue wires in the ceiling, white wires in the switch? Thanks for any input. See attached pictures.



Back of light for reference

 

Blue is the hot wires coming in and going out to other locations. The orange is the switch leg that turns on the light at the ceiling. White wires are the neutral wires and only get connected to the white wires of the light/fan.

That box on the ceiling is not rated to support a fan and will need to be replaced if you want to install a fan there. Also note, you do not want to put a fan on a dimmer.

After you replace the box you can connect the fan/light just to the white and orange wires and all will be controlled by the switch, or you can connect the light to the orange and the fan to the blue wires. That will have just the light controlled by the switch and the fan will be controlled by the pull chain on the fan.