In our 2016;25.2 ,VEGAS it seems the chassis and coach separates at about 12.6-12.7, at this voltage if I start the engine the coach charges at 14.4 for a few minutes before the relay clicks in and both charge.
At 12.6-12.7 if I connect shore power or generator the coach batteries show 13.6 for a few minutes before the relay clicks and both charge.
I had to rewire the BIRD since it was wired wrong from the factory, but appears to work right now (except that my BIRD seems to wait until below 13.1 to separate the circuits)
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