i figured most would be the nav bypass unit, like the one presigious society makes.
this will be the first mod for me so i can stream netflix video from my iphone on long roadtrips, which i have 3 coming up. I just don't understand why the switch is needed, because once i unlock everything, i don't understand why one would need to switch back. Not worth messing with the interior to have a clunky switch hanging out somewhere