Thanks Bogie,
I did check all the fuses after reading your posts and all ok. I think everything is operating as designed, but there is no BIRD (bi-directional isolator relay delay) circuit on this RV. The circuit diagram and a pretty thorough search confirm that. If I want to occasionally charge the coach batteries from the engine, I'll need to install a BIRD system or find another way.
Latching the "emergency start" button with a broken pencil does the trick, but I not sure if there are other consequences.
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