ok well i just noticed today and im not sure whats goign on. there is a black pullet o the right of my alternator that dosent spin all the time that's hooked up to the belt. it goes on and off. not sure what it is or if that's what it is suppost to do. anyone know?
here is a pic is directly to the right of the alternator
here is a pic is directly to the right of the alternator