I think you need to disassemble the entire shifter assembly and the center console but I could be mis-remembering. I had to get to this area to route wires for bluetooth and I want to say you could get to the aux imput area once you take all that apart.
You will need to take floor console apart to get the bucket out of the center console so that you can get to the wiring below and around it. Check the rave documents for "floor console removal" or something.
video has a portion that covers getting the floor console cover open, you do NOT need to do the dash console parts. I used this as a reference when opening mine up.