All my connections look good but will rework them. Truck was partially rewired after key was left one and burned up the coil, but that was many years ago. I assume my alternator has an internal regulator. My regulator has always been unhooked since I have owned the truck. I replaced the alternator once since owning it. I am starting to wonder if the alternator does not have an internal one. Is that possible or do all alternators have internal ones. It is an Ultima from O'Reilly's. It's been on there about three years. I don't drive truck much but battery was often dead so I replaced it . Hmmm. I did check with rpm at 1500. I appreciate all your help.
