Hey all, little issue with the 2004 F150 with the 4.6L. Was on my way home from the store and I noticed the battery light on. It would go away when accelerating fairly hard or revving the motor, but as soon as RPM's began to drop it would come back on. On my meter the battery reads 12.4-12.5v with the truck off, only around 12.3-12.5v with the truck running. Its still starting fine and everything, only thing that may make a small change is the 250 watt amp I have hooked up for subwoofers. Any idea's? Thanks!