On many 4 terminal Voltge Regulators (BAT FLD LOAD GEN) the Gen/Arm terminal is off on one side by itself or the bottom often unlabeled. On 3 terminal VR's the BAT ARM/GEN FLD are all side by side.
Its possible to use EITHER a 3 or 4 terminal VR n they both can work if wired correct.
BAT to load (not battery/starter) side of ammeter
ARM/GEN to geyys ARM post
FLD to gennys FLD post
LOAD feeds hot battery voltage up to the lights n ignition via a wire to their switches BAT input terminals
On a 3 terminal VR with no LOAD terminal, lights n ignition are fed off the ammeters Load terminal, same one that wires down to BAT on the VR. If you didnt use the 4 terminal L terminal the lights n ignition will still work if fed instead from the ammeters Load terminal, but if I had a 4 terminal VR and the tractor previously used a 3 terminal or cutout before, I would remove the lights n ignition voltage feed wires from the ammeter n instead wire feed them off the LOAD terminal on a 4 terminal VR
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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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