I hate to start a new thread but I'm working out all the kinks that seem to be showing up in my truck. Just today I have started hearing a creaking noise all of a sudden coming from somewhere under my truck when I'm turning. I've checked the power steering resevoir and it appears good and full(and red?). I just hooked up a sound system this week and maybe the extra alternator pull is affecting the belt? Have no clue! It disturbs me that my truck sounds like this and don't want it to crap out on me. What should I do guys?

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2002 single cab ranger
2.3l 5speed.
Crappy vinyl interior with bench seats. No power windows or locks. Simplicity.