After installation of Px6 9.0 Tesla style navi system the speakers pop when turned on.The volume was loud at the 2 setting. My car-2013 Mustang 5.0 GT was a manual a/c, Shaker with sync, with no navigation. My concern is the signal from the radio is not only going through the Shaker amps but also the amp in the radio. It would seem there should be a harness to convert the speaker plug into male RCA’s and hook the speakers up like a system with after market amps. Could the speakers be damaged?