I bought this unit on eBay a few months ago from an installer who represented it to be removed from a working installation. They had great feedback, and upon getting the unit, the subwoofer looked and worked great when I tested it. The wiring has some modifications that are usual from an install, such as some trimming and taping, but I used it for my test and all connections were present and worked as expected. I was going to add this to my car's audio system, but due to its compact interior layout, couldn't find a good spot for a sub. As it turns out, the space under the seats was super low and there was no easy remedy for that I could find. Includes subwoofer and wiring harness. No mounting hardware included.