OK, I made videos of my 1] current solid state voltage regulator, 2] a new solid state one and 3] an old-style reproduction of the original style [non-solid state] one. ALL exhibited the same jumping of the ammeter needle! So, my conclusion is the voltage regulator is not the cause. Hmmm. Now what???
Also, should the cover be glossy black or satin/flat black??? Thanks!
Cheers,
Steve
The voltage regulator is not in the ammeter circuit. The voltage regulator is connected to the field on the alternator so if that doesn't charge obviosly the ammeter is only going to show a discharge. But it's unlikely to be the issue.
Anything that you do to a voltage regulator on the instrument panels will have no effect.
More likely the instrument itself is bad.