To give you an idea, at the front of the trailer was our cooker/smoker, a Brinkmann Smok’n’Pit. At the rear of the trailer was a cabinet I built that had our menu board and taillights on the rear, and contained a 35 gal water tank, the handwashing sink, a 6 gal water heater, a 12V pump, and the plumbing needed for the water system. We had a faucet that gave us the whole range from cold to hot water for the handwashing sink, and we had a 22 gal gray water tank that hung below the floor of the trailer. We had cabinets and coolers on the sides that held hot dogs, sausages, buns, etc, and on top of one of the cabinets was a steam table for the saurkraut, nacho sauce, and had a compartment that held about a half dozen buns. The 110V that we needed was supplied mostly by a generator in the pickup, or some sites allowed us to plug into their power. The only things we need the 110 for was the water heater and the steam table. The Health Department was impressed by our ingenuity, and once even took photos to post in their office to show other mobile vendors what was possible.