> LM350 regulator.
> This can be adjusted to 5v and 12v at 3A (one for each circuit) .

And a jacked-up 7812 for the battery charging ? Presumably
13.8V (plus steering diode V) for a SLA before the 12V regulator.
Perhaps even a 6V SLA as well for the 5V rail

Need more info please Lucian

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