I have a bdp furnace. I am trying to wire an inline fan to the blower, but cant. I ran the hot wire and spliced it to the HI wire of the blower, right to the motor.... however, when I turn the A/c off, the inline fan turns on. When I turn the A/C on, the inline fan turns off.... I know I have it wired to the HOt of the blower motor, and the common wire I wired to the common wire of an outlet. Also, if I have the A/c on and i pull the blower cover, the A/c shuts off, but the inline fan starts (door switch activates)... I need help, any thoughts??? I really appreciate it.