The wiring harness I put on with crimpers and that sort of stuff, im gonna check it tomorrow, it really dont bother me not to have it but its good to have everything balanced well. You have pleanty of room in your trunk, I really never use mine though so I think ill be ok. The box is really deep and is sealed off nice, it hits hard and I have it up aginst the back seat so people accually like riding in the back now! I think that heavy box dropped my car a bit in the back too, id rather have the front lower than the back though.