I replaced center dash actuator for heating and ac I accidentally unplugged the white flexible duct work and can't figure out where to re connect it any advice would be awesome
It's a 2010 ford flex

 

I wouldn't call it advice, but if you took a flashlight and looked in the area where something round about the same size hole of the tubing , you just might see the place where it goes. depending on the length of the disconnected end, it can only go so far and that should be the limit of where you would look.