[Classic Heartbeat]

I am just going to agree to disagree here. These aftermarket fan systoms are designed to cool the water in the radiator so when the engine heats up and the thermostat opens, the water pump, pumps the cooled water from the radiator into the warm engine to cool it down. The hot water simotaniousely is pumped into the radiator heating it up. If the fans are not reading the temprature of the radiator then they don't know when to turn on, or off to cool the radiator. The temp sensor placed anywhere else in the systom can not give an accurate reading of the temprature of the radiator where the fans are located and are what they are designed to cool. I am not saying that the other locations won't turn the fans off and on and give some cooling effect, because obviousely they will. It is just not how the systom is designed to work. If you do not want your fans to turn on after you turn your truck off, then wire them to a source controlled by the ignition. WES