Greetings,
Mr. 1S. Get a beverage and a note pad. Turn selector switch (SS) to off. What works? Hopefully not much other than your bilge pump(s). Open fridge door to see of light works. Try to start engine.
Turn SS to 1. Same deal as above. What works and what doesn't?
Turn SS to 2. Same deal as above. What works and what doesn't?
Again, hopefully, when the SS is in the ALL position, everything works. Should be a simple process to determine which of your 2 battery banks (as mentioned above) is starting and which is house.
Drink beverage.
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RTF
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