I have a 2006 Volvo S40 with the expansion tank with the two overhead hoses that come out of the tank I need to know which hose is the hose that goes back to the Head and which hose goes back to the radiator. I remove the tank and did not mark the hoses.

 

When looking at the reservoir, the one on the left goes to the radiator.

 

Thank you so much for your help