A LONG time ago GM/Delco came up with the best alternator system that was out there at the time.
It had a mechanical voltage regulator with a "field relay" inside of it.
Massive Ferguson, Oil Allover, and others came up with some creative circuits to derive some other functions out of the field relay in the Delco 10DN mechanical voltage regulator above and beyond what was ever done in a GM vehicle.
Fast forward 40 or 50 years, and aftermarket suppliers have developed replacement solid-state regulators that can do the basic functions of the old mechanical regulators but cannot fulfill every possible permutation that creative folks eked out of the old mech regulators.
You either need to find a "NOS" mech regulator, or do a bit of rewiring to make everything well again.
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Today's Featured Article - Uncle Cecil's Super A Lives Again - by Mike Purcell. A week or so out of most of my childhood summers was often spent with my Uncle Cecil and Aunt Sissie in the small East Texas town of Maydelle on their 80 acre farm. Some of my fondest memories of these visits are those of learning to drive a tractor at the helm of Uncle Cecil�s 1948 Farmall Super A. Uncle Cecil was the second owner of this wonderful little tractor, but it was almost as though he had adopted an infant. The original owner was a man from Minnesota who bought her from a local dea
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For sale Farmall super A tractor is complete and has just been setting for awhile,it was running when pulled out of the barn,shouldn’t take to much to get it going asking 1100.00
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