Last one to post in this thread wins!

I would check out the alternator Mark since the alternator supplies your vehicles electrical needs , when it begins to lose it's potential so does the vehicles accessories that draw on that electricity . Do your head light dim too? The regulator on the back of the dash cluster only runs the fuel and temp. gauge .
I don't think the headlights dim FOG but my friend told me the taillights do flicker at night. I may have a multitude of sins going on here. First I guess is to check the voltage coming out of the alternator and go from there. Thanks for your input guys...my electrical knowledge sucks.