[steviee7]

I've been noticing my headlights and dashlights dim to about 95% and then back to normal. It seems to change the faster my engine goes, It's really not too noticable but it is and I don't know what it is. It doesn't do it all the time, It could start out fine and then do it and then go away, it could start out fading and then get better. Sometimes while it's doing it I can open the sunroof and the you can hear the sunroof motor change sounds in/out. Could it be the alternator, I know it must be electrical but where do I begin.
I hate when it's electrical.
One time while it was doing it I turned on my rear window defrost and it stopped doing it. I thought ahhhaaa, I found it! but then it did it again, with or without the defrost button.

Thanks