Been so long I can't remember, tbh. I think once you get the throttle pedal off, it makes sense how to route it (I'm guessing up top to the bottom). I want to say that the side panels slide forward? Once you remove the center console, it makes sense, I think.
There might also be another DIY post that addresses how to remove those panels and center console, if you run a search. It wasn't to do this, but someone else.