1998 windstar rack and pinion steering, replaced rack with new one now steering wheel flies back and forth?

when I removed the rack a small valve came out from one of the holes that the hoses attach (don%26#039;t know which one) so I have tried both with no change in the steering wheel.|||you have got the pressure and return lines reversed at the rack. be thankful you were not reaching thru the steering when you started it up. saw a co-worker do that and a busted wrist to show for it.the little restrictor goes in the pressure line.