Obviously, disconnect the negative battery cable before doing any of this work. Also, the Touring has a noise canceling feature (like the Bose headphones) that you would loose if you installed the aftermarket unit. But, I gotta admit, the aftermarket unit looks incredible. Does it improve the sound quality? I have the Touring and even with the subwoofer nearly maxed, it still sounds like my 1984 Honda. It's time for Honda to sign on with a real audio company like Harmon Kardon.