The title indicates that my E93 experiences a no-charge or no-crank issue, yet it may be jump-started. I conducted research on this topic and found minimal information. I have purchased a new battery, although there is still no ignition without a jump start. Attempted to install an alternative power distribution box and conducted continuity testing on what I believe to be the best option. All cabin lights and controls appear to function as indicated. I have directly checked the alternator, connecting the red wire to the red cable from the alternator and grounding the black wire. However, this method yields no voltage. Any assistance would be greatly appreciated. Thank you very much