I don't think you have done anything wrong.
I have been told that this condition is usually due to resistance in the wires caused by corrosion. I've had it both show up in the ammeter (as a throbbing in concert with the lights), and not show up in the ammeter. I believe that depends on where the specific problem is.
Sometimes the corrosion isn't obvious, and is inside the insulation, or where the connector attaches to the wire. I was advised to check the plus and minus connections and wires to the coil, but cleaning them up on both ends doesn't always fix it. I think that the correct way to do it is to measure the resistance in each of the wires, determine if it is correct, and replace the offending wire.
In that cars that I have had this happen to, changing components like the alternator and/or the regulator had NO effect. I am not an electrician, so that is about all I can say about it. I do not believe that it is very serious, but it is very annoying.
I'm getting a fluctuation in the lights while running at 1000rpm+, it's a
regular dimming perhaps associated with the voltage regulator? The ammeter
never twitches to the charge side but does dip a bit to discharge when a load is
applied.
I just put a new alternator on and this is happening after the electrical
fire/new wiring harness. I had a mechanic help me with the wiring on the engine
side and I trust what he did....not that it can't be wrong nonetheless.
I've looked through the repair section but haven't yet found this subject. Any
obvious things to check first?
Donn Reese
1960 Custom 4dr HDTP
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