[roctor]

My 1974 911 will not crank at 11.56 volts. Every component will come on lights, headlights, fans, pumps with out dimming. Why is the simple act of turning the key an make the engine protest. New cables and terminals. Ground down neg. cable to frame for better contact. Thinking Optima Yellow as solution. The battery was bought in Nov.2015 at AA. Hair falling out as I type.Roger