I see.

1 you need to know what is on the other side of the ceiling. you may not be about to pass wooden barrier to pass wire from ceiling to space behind vertical wal. 

2. the u tube guy cut two holes (blue mask taped) to help guide the wire from horizontal to vertical.

3. about the switch, you can replace current one by a mutiple switch using existing switch box. 

所有跟帖： 

• 謝謝大俠。我琢磨琢磨 -baniff- ♂ (0 bytes) () 11/22/2023 postreply 08:54:29