My truck is leaking power steering fluid, not a.

Inspect with a good flashlight from above and below. If you still can't tell, clean the area around the power steering pump and high pressure lines and drive it a little bit to locate the leak. Even though it may not seem like a lot of fluid, it is dropping on the road the whole time you are driving and really needs to be fixed. Power steering pumps fail and are not difficult to replace.

Another thing you can try to help pinpoint the leak is add some power steering dye and then drive it and look later for leaks with a dye light the leak will glow bright.

That is a good idea. Locating the source of the leak is really important.