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The ammeter is reading about 10 at a fast idle, drops to around zero with high beams on.

Thanks to all for the advice and suggestions. I got to the 3rd generator brush and was successful re-polarizing the generator. It's now charging at 7-9 volts and about zero with the lights on. I never was able to get any current readings across the cutout, so i'm not sure of the situation...

Good news. Swapping the battery to positive ground has stopped the battery drain. Connection at cutout is no longer warm to touch. It isn’t charging, so that will take a little more diagnosis. Thank you for the help

Well, great question. The battery was installed negative ground at some point. The truck runs, I never considered that a possibility. I’ll swap the cable connections, and see what happens with the cutout. I believe this may have been a long-standing issue. There is a master battery...

Hi All, I’m a total Model A newby helping out with a friends estate. This is a ‘30 Model A Pickup. It has a massive discharge showing on the ammeter and drains the battery pronto. After a little checking I believe the cutout has failed. The battery connection at the cutout gets real hot and...