How to open my tailgate on my 1996 bronco?

how do you put the tailgate window down if the motor is not working , on my ford bronco? The window is not able to go down so it's not allowing me to open the tailgate. Is there a safety switch on the tailgate? The switch that make the window to go up and down is passing power to the motor but it is not doing anything. How do i put the window down so i am able to open my tailgate on my bronco?