Not sure which one it is but its right under the alternator and the bearing gets noise at idle and seems to go away when i give it gas, when spraying belt dressing it goes away briefly but comes back. It sounds like its coming from the alternator, but its not, its other pulley bearing right under it, not sure which one it is, so someone can tell me or show me with a pic as well as tell me which one is the most common on that goes bad