I don't know if you finished yet, I'm just seeing this now on Tuesday.
Yes, you can disconnect the entire wiring harness if you wanted to. I did see a video on that. But I've never done that.
None of my changes to seats, thus far, have required that extent of removal. I just remove the seat bottom from the seat frame. I leave the seat frame in the car. I don't remove all the wiring, just the connectors (3 on the passenger side I believe) that go to the seat bottom.
I do this by removing the four floor bolts and rocking the seat back and forth to ease removal. I can but not necessary to pop off the controls side panel to get additional room to work.
What are you trying to do?
My YouTube videos are on my channel and go by my name.
Sincerely,
George Borrelli
Crystal River, Florida