I have a 2011 Supercrew with 10 button 6 Disk CD changer and want to install the MTX F150CO9FB10A-TN loaded, amplified sub and am wondering how difficult it is to do. Did you use rear speaker wires for the leads to sub and where did you access the wires. Colors? How difficult to run positive feed from battery? Any pictures or videos posted as to how to install? Thanks