Quote:
Originally Posted by Scalf77
When the engine is running at idle, the alternator can not provide enough current to keep the voltage above the set point, so you hear it disconnect and then the voltage rises and the it connects again. Then the cycle continues, sounds like you have a pretty good load on the system while the engine is running, I would try to reduce that load as much as possible.
Also make sure that you get the house battery fully charged (on shore power). The state of charge on your house battery will also come into play.
-greg
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Thanks!
I had it in the shop. They could replicate the voltage drop but not to a point that its would cycle.
But, in testing, they found the ground wire was extremely hot and under gauge. Ground wire gauge was increased and the result was about 1V higher house battery voltage.
I guess it was a combination of a too high load with poor grounding causing the house battery to drop too low.
Seems fine so far.