Heater /AC hoses inlet or outlet?

[gbww]

Stupid mistake of the day goes to....me!




I replaced the heater unit in the dash with an AC unit. When I disconnected the hoses from the engine, I neglected to label inflow or outflow. The core has it marked, just not the hoses from the engine side.




Any clues or tips on determining which should be which?




Thanks in advance!

Dan

 

[Berend]

I will take A look it my truck tomorrow if you still need to know it.