I find myself reaching out to this awesome community once again. I have a 1974.5 Datsun 260z (Oct 1974 build date). Two weeks ago all was right with the world. I'd had a nice afternoon of driving the Z. I stopped to fill up the gas tank and when I started the car back up none of my gauges were working. Nothing but the speedometer (it's a mechanical connection). Fast forward to this Saturday an my battery alone will not start the car. I get a jump start and try to make it home. It's night and I have my headlights on. By the time I make it approximately 10 miles to my home my headlights are barely visible. Here are my questions.
Do you think that the gauge issue is connected to the battery/alternator issue?
based on the photos below, do you think my alternator is the original (or a stock replacement) or has it been upgraded to a newer internal voltage regulator type alternator?
I have charged the battery and the car starts and runs fine for the short drive I had today.
I'd appreciate your guidance on solving this issue. Thanks!