I'm not really sure what your asking... on my 14, I replaced all my speakers and tweeters with Kickers. The factory amp was located behind the right kick plate... I just used the factory service manual for wire color and location, tapped off the output wires from the factory amp, ran them to a 4ch amp and then ran the wires back forward to where I spliced into the factory amp... not sure what the factory output was, did not care because it was shit. With a new set of speakers and a 4ch amp, dont have any problems anymore. Better then the Bose setup that comes stock... I also added 2 12" subs on their own amp... ?