I am removing an old ceiling fan and installing a new ceiling fan. It’s my fault, I didn’t pay close enough attention when I was taking the old one off, but I ended up with two white neutral wires. I have the two black wires one of which is always hot and then the two white neutral wires. My understanding is that one of those is not actually neutral. The black tape on the second wire is mine, it was not there, it’s merely to show me that that wire is bundled with the “hot” black wire. How should this wire into the fan?