Had someone go over entire electrical system and found an open circuit in dash wire harness. This was after hearing twice the alternators and batteries were the problem. I put a third alternator & battery and thought all was fixed but was wrong! Lights are flickering again and car idle will fluctuate and shut off entirely when stopping at traffic lights. Eventually it just won't start. I have totally restored this car to showroom condition and it is annoying that I have to worry everytime I use it whether it will start for me. Hoping for some new suggestions.

I also had a new fuel pump, spark plugs, distributor cap and wires.