Ok. First off, does the amp have built-in crossovers? If not, you'll need to put one between the head unit and sub otherwise you'll blow the sub because it's not designed to handle anything over 300 Hz, maybe a max of 500 Hz.
Secondly, you didn't tell us what audio system is installed, so I pulled the schematics for all of them to save time back and forth asking.
http://www.dropbox.com/s/lu9chouedus6kvs/F150%20Stereo.pdf?dl=0
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Thursday, September 10th, 2015 AT 1:10 PM