Cedrock

Hey all, my 2005 rx330 came with an aftermarket parking sensor where they had the wire go from either a)along the ceiling from the trunk to rear driver side seat or b)maybe from the trunk to the rear driver side seat, along the side of the car. I cut the speaker/tweeter wire since it was hanging from the ceiling above where the rear driver side passenger ear was (between their left ear and window) and I think it maybe shorted or blew a fuse.

Unfortunately I can't determine how the paneling is removed in order to follow the wiring to investigate the issue, does anyone have any picture/video/instructions on how to follow the wiring above the ceiling along the passenger side or maybe along the side or the car towards the rear trunk bumper area?