Alright, I bought one of the factory subs off ebay a couple of days ago. I just went for it because it's small, doesn't take up much space, and I don't really care about rattling my bolts loose. I just wanted something more than stock. So today I opened up the package and it came with the sub and the frame to mount the sub under the seat, thats it. I just got the instructions from I just checked out the instructions for installing it. Looking at it, I noticed that there is something that looks like it's a harness. I don't know if it is or not, but all I know is that I definatley didn't get one with my sub. Do I need one or is it back behind the stereo ready to plug in and go? Help.