Are any of the old generator regulator wires shorted together, or did you tape each one up individually? None should be connected together, all taped up individually. You got good advice to disconnect the heavy wire from the alt output stud, then see if the battery stays up. If the discharge stops with the disconnected alternator, a bad alt diode is likely.
Does your 63 Ford have a charge light or an ammeter ? If it has a charge light, you can make it function with the one wire Delco alternator. You need an alternator harness repair plug from your auto parts store, most any GM from 74-85. Find the small gen light wire at the original generator regulator harness. When grounded with the ign on, it will make the gen light glow. Connect that wire to the small white #1 wire in your new Delco plug. Doing this will not only give you a functioning gen light, but also will make your 1 wire alternator start charging a lower rpm. You may as well also put a ring terminal on the heavy red #2 wire in the alt plug and add it to the bat output stud. Doing so will cause no problems with the 1 wire alternator and your truck will now be wired to work with a standard 3 wire Delco alternator, should you ever need to replace it.
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Today's Featured Article - An Old-Time Tractor Demonstration - by Kim Pratt. Sam was born in rural Kansas in 1926. His dad was a hard-working farmer and the children worked hard everyday to help ends meet. In the rural area he grew up in, the highlight of the week was Saturday when many people took a break from their work to go to town. It was on one such Saturday in the early 1940's when Sam was 16 years old that he ended up in Dennison, Kansas to watch a demonstration of a new tractor being put on by a local dealer. It was an Allis-Chalmers tractor dealership,
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