My Headlights and interior lights are pulsing brighter and dimmer? I just noticed this on the way home from work, and when I parked and idled at the house for a minute. It's very similar to like an old generator on a bike where when you're going the light is bright and almost normal.. I'm gonna look at alternator & belts - maybe voltage regulator. Please R3V I want that easy answer while I sit inside and drink beer. :D