[Fulltiming]

There are typically dual switches for the curbside air dump valve, one in the bay by the dump valve and the second on the dash. Please be aware that they ONLY operate when the ignition is turned on. I thought mine was defective and Newell very politely told me the key had to be on for it to work. Also make sure the tank is empty or you have a hose attached before operating it so you don't try to emulate Chevy Chase in Family Vacation.