Everything you said has worked perfectly. Thank you for all of your help.. Just one last question. The a-pillar tweeters.. any idea which is positive and which is negative. All the door speakers match what comes out of the amp however the tweeter wires are different at the speakers. Thanks.
Yes, basically that's how you'll hookup the amplifier. There is one issue thou. Your factory Sony 700w system has the tweeters, the subwoofer under the rear seat and the "AMP" under the console? Correct.
im using a pac 4 channel out loc for front and rear speakers to a alpine 5 channel amp then im using a loc for the subs. What i gather from all of this is that i just have to cut the wires from the harness hook them to the loc go back to the amp then hook the speaker wires from the amp to the opposite side of the spliced wires out to the speakers. All im trying to do is add an amp to all the factory speakers. All i want is more volume. I know changing everything would be wonderful but this is the route id like to try to go. THANK YOU VERY MUCH FOR YOUR HELP.
Please help. 2013 F150 FX2 Sony 700w with sync. On the sony amp which of the three plugs do i leave plugged in. Which do i tap a LOC into to run back to the am amp. then which wires do i tap to send signal back to speakers. I appreciate any feedback thank you.