Im beginning to think that my rad fan control box is bad...

1. is it possible to bypass the box by simply plugging in the power and groud going into the box into rad fan?

2. would the fan ever turn off?

3. what would i do with the 3rd cable going into the control box?

thanks

 

Without the sending unit it will run constantly. Heres how the wiring is set up.

Blue fan positive
Black fan negative

Green to sending unit on radiator
Black to sending unit on radiator