Despite its 300,000 miles we're not getting rid of the 4Runner anytime soon, so it was worth making a small investment to bring its infotainment into the 2020s.
As the Haynes repair manuals like to say, "Installation is the opposite of removal." First, I did the bare minimum to make the CarPlay unit functional, paired my phone, then put on some tunes to make… [+1678 chars]