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 - Measuring with Calipers - by Staff. The legs of inside calipers are curved outward at the extremities to facilitate measuring small holes, while outside caliper legs have a large curve inward to increase their capacity for large work. Firm-joint calipers are adjusted approximately by the hands and then set to the feel of the work by tapping them on a metal surface. It is a common practice when opening calipers by this means to tap the top of the joint. It is better, if possible, to tap the inside of the legs, as repeated blo
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