I'm changing my tranny fluid (03' f-150 xlt w/ 4.2) and have to pump the fluid out of the torque converter. I know I have to disconnect the line from the radiator but am not sure which line is pressured from the converter and which is the drain line to the pan. Can someone please tell me which is which? One goes into the radiator at the top and one at the bottom. Thanks!

Just so that everybody knows, the line goes from the converter feed, to the top part of the radiator, out through the bottom, and back to the pan.