Am I having a problem with my alternator, flaky battery cables or something else?

[charlesshoults]

I drove to work this morning and about halfway there noticed that the truck had less power than usual. I stepped on the accelerator and nothing happened. I made a stop on the way to pick up some breakfast and listened to the truck for a couple minutes. I found that when idling, the truck sounded fine, but when I would press the accelerator, engine rpms would slow and almost stall the engine, before increasing rpms and sounding almost normal. However, I found that when I turned the headlights off, this behavior went away. I know that the battery cables look pretty frayed and appear to have been repaired a few times so I plan to replace them, but I'm not confident that new cables will solve the issue.

[fupabox]

if the cables are frayed replace them and make sure to replace the engine ground strap as well...sounds exactly like bad wiring..could be a dying alternator but sounds more likely the cables