hey guys a got a quick question if my truck(06 f150 supercrew xlt) didnt come pre wired for the sub what can i do as far as wiring? the reason i think its not wired is that i checked under the rear driver side seat and i see the rug cutout where the wire should be but i dont see the wire . so im guessing its not wired now i want to put the factory sub and a 6 disc factory radio i have seen both on ebay and i dont want to spend money if it wont work