Quote:
Originally Posted by rotorwrench
The two items are completely different in they way they function. The Gen light gets power from the ignition switch when you turn it on and ground is provided in the regulator (A terminal) as long as the cut out is open. As soon as the cut out closes to bring the generator on line, the light loses it's ground unless the generator stops charging. It can get power back through the generator armature if the cut out sticks closed. You can tell that when you shut the key off and the light is still on.
An ampere meter samples current flow from the output wire of the voltage regulator (B terminal) through a shunt that is generally built into the meter or it can be an external shunt wire. The other wire is connected to the power bus or electrical load. There is no ground involved with an amp meter. If you connect it wrong way around it will show a discharge when it is charging and a charge when it is discharging.
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Thanks..Good description, which I need. It makes much more sense now.