Adding a trans cooler

Hey guys! So I'm adding a trans cooler for my 904 and I was curious if anyone knows which is the inlet and outlet on the trans?

On the transmission the fitting in front is the outlet; the rear one is the inlet.

Or which is which on the radiator. It's a downflow radiator so both connections are on the bottom side by side. I'm guessing the one on the left is the inlet. Thanks!

There is no real designated inlet/outlet on the radiator cooler. It's whichever way the lines from the transmission are bent