Yeah I could make a better point to carefully plan out the return line direction. I made a mess too lol. Funny thing is I got it on video, I should post it here as a "what not to do"

What fluid did you use? With or without stop leak? If you used p/s fluid and it whines, you can switch to dexron III or VI. Or vice versa. I would think if it whined for a bit then stopped, air got in the system.

Also it's common for the return line to cause a whine by letting air in the fluid, being it's the suction line. That would create bubbles in the fluid. They usually go bad on their own but disrupting it could push it over the edge. Also at that mileage I would suggest keeping an eye on the level, new fluid may leak past worn seals more than old fluid would. Luckily lucas power steering stop leak works very well. Worked for me.