I have a jubilee which I have put 2 regulators on both act the same tap on them they charge for awhile then quit tap on them they charge again. Have made sure there is a good ground new wiring harness ( Dennis Carpnter)?

If you have your original Ford 6V (autolite) regulator you might try just going through it to clean up and gap the points. Check out voltage regulator repairs on You-Tube, there is plenty there, also there are solid state electronic units (I have one on my 39 9N that works really well) and there is a guy that is on You-Tube that builds solid state units up in Oregon. I cleaned up my 8N regulator, adjusted the points and it has worked well for the last ten years.

I bought one of the after market units fro Just 8N's and it came out of the box with the internal points all bent out of shape. The 6V systems work fine if they are kept in shape occasionally.

In the past thirty years, I have learned anything made by those- "two brothers in that small two bedroom shack way back in that dark ally in that small town in China" will not
have a real dependable future. Real problem....what happen to the old Made in America product(s)?

And that is why my Jub and my 860 both now have alternators.