I'd take the ceiling down
Redo the wiring & fan
Then put up a new ceiling
Redo the wiring & fan
Then put up a new ceiling
Thanks for the feedback. However, as you can see from the picture the hole for the exhaust is below the ceiling line. In addition there is only 2x4s above the existing plaster ceiling. There was an attic that was above the bathroom before the upstairs was finished many years ago. Not enough room for that. Thanks though!I'd take the ceiling down
Redo the wiring & fan
Then put up a new ceiling