Be sure this cable doesn’t get stuck under the logic board during reassembly. Mine was under it, I was able to get it out but connecting it to the SuperDrive required a bit of force because my cable is so short.
I added a small piece of tape to one of the cables and took a picture to remember where each of them go
Whoops, definitely tears easily. I tore it at two spots. At reassembly I was able to get it to adhere to the case nonetheless by rubbing along the aluminium tape using my finger nail.
During reassembly make sure all I/O connectors are above the logic board and not under it! I also connected three USB drives to align the logic board.
Thank you! I don’t understand why it’s not mentioned in the guide
The Bluetooth cable was refusing to disconnect. The cable goes under the logic board pulling the connector down, especially on my iMac it was very tight. What ultimately helped was sliding the flat end of the iFixit Halberd Spudger under the connector, lifting it slightly up. Then I was able to pull it out of the socket.