recently the generator light in my '73 super beetle came on and the turn signals stopped working. It had a alternator with an external voltage regulator. Since this issue started I replaced the alternator with one that was internally regulated. The generator light remains an issue. At startup everything is fine. As soon as the engine is revved above idle the generator light comes on and stays on. Also, the turn signals do not work. The hazard lights work fine. My tail lights/brake lights seem to be starting to have problems as well. Any advice on what might be causing these issues would be greatly appreciated.