Join Date: May 2009
Car: OBW H6 VDC, H6 OB Sed, Tribeca, XT6
Feedback Score: 1 reviews
those are not power steering lines - those are as you suspected, transmission fluid lines. it's just a tube inside the radiator, so it doesn't matter which side is inlet/outlet.
the power steering system doesn't have any cooling apparatus.
it's possible the pump is making the noise you just never noticed it before and are now more attentive having completed a big job.
H6 OBW VDC, H6 OB Sedan, Tribeca, Lifted XT6