Marc, Your right. When you turn on the air condition the fans come on and cycle as the pressure sensors dictate. The Fan Zilla as I under stand it staggers this operation so the main relay that supplies most of the power to the car doesn't get a 60-80 amp all at one time. It works great and does what it supposed to do. The Fan Fix also plugs into the relay sockets and allows the car to operate as normal, but it doesn't take the power from the main relay. It releives the main relay of this duty and diverts it to the battery. By doing this, it also solves some of the low voltage problems of the car, such as dyeing at a stop light when at an idle, lights dimming so on. Also by diverting the drain the coil also doesn't see a major voltage drop for a loss of power, even while driving. Thusn the bucking as you say it is down to a hop if that. John 11004