Search results for query: *

I have a vintage SUN 9000 rpm tach . It was working beautifully until last week. Then I noticed at night that the tach and its light were not working if I had the interiror dash lights on, but if I turned the interior lights off the tach starts to work again but with no tach light?? I hve...

Can this be a bad alternator or voltage regulator? Lights all brighten up when you rev up and dim back down when the car idles. Is the voltage regulator built into the alternator ? Don;t wnat the battery to overcharge and blow up. Any help here? Thanks