Generator stuff. The shoe box on the left is the inverter/controller. It takes the DC output of the generator and makes AC. The colorful wiring harness at top is the remote, but I only used a little of it. I used the wire in the coach for the remote to keep from having to run new stuff. The gray bundle of wire is the control circuitry that connects the inverter to the generator. The exhaust bits are stainless, and the black cigar is the resonator. No clamp was provided to clamp the odd-sized pipe to the flame arrestor on the muffler that\'s mounted to the bottom of the generator engine. I used a 1-1/4\" clamp as suggested in the poorly written installation instruction, and if it leaks I\'m not admitting it. As with Ken Henderson, I had to cut the curved exhaust pipe in the middle to make it an S shape.