What does this mean???? At night with the lights on in my 64 Valiant w/new alternator I can see the dash and headlights pulsing brighter/dimmer/brighter/dimmer. Maybe 2 pulses per second.
I was also surprised ,when I was changing the timing setting with the engine running, to get a spark from the socket extension which was touching the dist. lock down nut and the inner fender panel. Then another spark when I was tightening the lock down nut and the end of the socket wrench touched the rear of the alternator (not a connector)