On my 74 super, I noticed that when I apply the brake, the alternator light is coming on very dimly. I wouldn't have noticed it if it hadn't been nighttime. Is my alternator starting to go, or does this sound like some other sort of electrical woe?
No woe I don't think, but more likely is that the current draw with headlamps and now brake lights on at idle is more draw than the alternator is producing at that moment. I wouldn't worry about it, but speedy jim might pop in and correct me on a point I might not be aware of :)
increase your idle speed? It isn't 750 rpm, is it? I like 900.
Dave is correct; voltage drops in the dash due to the current drawn by the lights can make the ALT lamp glow dimly. Basically, it's normal and doesn't mean the alt is bad.
Speedy Jim
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