install the bags, then install the tank, then your valves, then run the airline from the tank to the valves, then to the bags, then install your compressor, run the airline from the compressor to the tank, run your wires from the compressor, with a fused link, either with a toggle switch or run it through the igniton so it only starts up when the key is on, then mount your switches, run your wires from the switches to the valves, give it a test run, open the door, drive it out, bring in the next one