Thx folks.
- enblethen: Good call, I will check fuses. I was careful hooking up, final negative terminal last...
- theoldwizard1: I'm hoping to avoid replacing the existing components, it was working great before.
-jdc1: no trailer, this is a class C RV.
-jkwilson: Exactly!!! So, what could have changed? I'm on the hunt for a "Missing Wire" but honestly the only extra wire in the replacement job was the Victron battery monitor wire from their shunt to the positive terminal.
Go figger folks, I'm baffled.
Is it possible that the alternator has circuitry that won't deliver current to the House battery bank until the engine Starter battery is fully charged? That's a condition that I might never have noticed, because why would ya? In the end, after making some mileage, you pull into camp with both batteries topped off.