Want to share some pictures for an LX470 in case someone is looking to do this. There are 3 panels to remove.
Tools needed: Philips Screwdriver, Needle Pliers, 10mm socket, 1 very short screwdriver
1- Take the top of the steering cover panel. (The one with dim control scroll) . Just pull
2 - Take the Plastic trim under, one screw in the corner and taps on other corners, you can use the needle pliers to press on the tabs from the inside.
3 - Take the metal piece by using the 10m socket.
You should see the connector behind the air vent, I didn't have to take the air vent, just run the cable there and connect it.
Sorry I didn't take a picture with the metal piece off, it was too hot outside and my brain was getting cooked.