Totally dead coach stranded help please

[The Gritz Carlton]

When ll else fails...check relays.

[Oneilkeys]

I’m surprised that replacing the Trombetta solved your “dead coach” issue. The Trombetta just separates the chassis battery system from the coach battery system. If it is open, both “systems” should work separately. When you shorted across the two poles of the Trombetta, you were connecting the chassis and coach batteries which would have charged your chassis battery and allowed you to start your coach. The same thing should have happened if you pushed the emergency start button. It bypasses the Trombetta.

[lwmcguire]

The Trombetta connects the chassis battery bank with the house batteries

[Oneilkeys]

Actually it’s the BIRD that connects the chassis and coach batteries by closing the Trombetta when it senses the correct voltage on those battery banks.