I installed a Dodge Viper 3000/4000 cfm electric fan and I am going to use the factory harness to kick the external relay on to operate the fan. I have the fan wired on high all the time and I am going to use the factory low speed wire so it kicks on at the low speed temp. My question is which of the three wires is the low speed. I've heard it's the middle of the three.. Also I am wondering does the power kick off the low speed wire at the time the factory high speed would kick on, which would in turn, turn the fan off by cutting power to the relay.