New battery, new alternator. The alternator was confirmed good at oreilly. I am Getting 11 volts to the bolt on cable on the back of the alternator. I’m Getting 8.5 volts to red wire on the plugin on the alternator. I’m Getting OL ohms from ground wire on plug-in to the alternator to frame. The Battery has 11 volts drained from consistent diagnostics. We have also Rev’d truck to maybe help charge. The Hot wire to the plug-in was a little black cutout the black part and required it.