Transmission lines for a 1972 lincoln

If you look at the alignment of the lines (unless they have been cut and rubber hosed back together) as they reach the radiator you should be able to tell which one hooks up where.

That's my problem because when I got the car the two lines from the radiator where missing. I have new ones but can't figure out if the top line or bottom line goes to the transmission, what could happen if I cross them