The last of the videos going over the installation of the Subthump box and Sundown Audio SFB-1500d and the Sundown SA12" subwoofer. Shows the power cable installation along with the LLJ harness and Link2 line converter to the factory radio and links in the video to open up the dash and install them. Basically if you duplicate this you will have that bass you want and the range your system should have had from Ford. Links are in there for the equipment as well. Recommend playing it on something that has the capability to get low or you will miss much of the sound from the sub. Best wishes to you all.