A 51 H didn't have a four position switch which I think you have some what clarified yourself. So, therefore if you do indeed have a voltage regulator, the field wire from generator will be hooked to field terminal of regulator where as if you were using the four position switch the field would be hooked to the light switch for high and low charge. Then your cover on on box would need to have a good ground but when you have a regulator it is not in the circuit. You can tell if generator is capable of charging by grounding the field wire at generator, if it charges then the problem is with the regulator or wiring. Just make sure your arm terminal of generator is hooked to arm term of gen and battery terminal of regulator is hooked to ammeter. If hooked properly the ammeter will show discharge when engine is not running and you turn on the lights. If not, you need to recheck your wiring.
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Today's Featured Article - A Lifetime of David Brown - by Samuel Kennedy. I was born in 1950 and reared on my family’s 100 acre farm. It was a fairly typical Northern Ireland farm where the main enterprise was dairying but some pigs, poultry and sheep were also kept. Potatoes were grown for sale and oats were grown to be used for cattle and horse feeding. Up to about 1958 the dairy cows were fed hay with some turnips and after that grass silage was the main winter feed. That same year was the last in which flax was grown on the farm. Flax provided the fibre which w
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