VE air conditioner drainage tube location?

[cant drive 4 $hit]

Can hear sloshing coming from behind my dash assume I have a blocked drainage tube. Just having trouble finding the drainage tube outlet so I can shoot compressed air up it and clear the blockage.
Thanks

 

[MYVESSV8]

check your air inlet too, but its under the car lhs near trans tunnel/engine bay

 

[RiCeY]

Check cavity under plenum where leaf filter/pollen filter is. The drain there blocks up and fills the cavity with water. It will eventually flow into the cabin.