The Voltmeter indicates that it's charging good until I turn on the a/c. Then it drops just below the discharge mark. If I turn on the headlights, it drops WAY down into discharge. If I turn on just the lights and no a/c, it still shows it's charging. This is the second alt. that I have put on it and it hasn't helped. Is there something I am missing that could cause it to do this? Could it be that the Alt. is just not powerful enough to power everything? I'm at a loss. Any help will be apperciated.