power steering

Anyone know which line is the return and which is the pressure line. theres a small line and a big line. Im thinking the smaller is the pressure line. been so long since i took the power steering gearbox off. Got to get some lines make going from a ford power steering pump to mazda gear box. Also which line is the cooler located on? THANKS

i beleave the small one is the press line...i think the cooler is on the same line....i dont have ps

Thanks