Just bought a 1985 toyota dolphin this weekend and I need to have this thing ready in about a month for a 30 day around the country trip. The generator is missing out of the compartment. Does anyone know what generator came with these ones or should I put anyone in there? I have one positive wire, a fuel line, and a wire with three wires on it that someone cut all inside the compartment. Do I only need to hook it up to 110 power and that will run the a/c or do I need to get a 220 one? Also how many watts is needed to run the a/c unit? Has anyone ever tried running a very large inverter like a 4000 watt or 5000 watt size? Would these run the a/c unit at night?