[WHITESPRAY]

seems strange that your engines shut down with the switch closed. I can think of no reason for that to have happened Unless both alternators failed and the batteries went flat. That would be pretty unusual and I suspect you would know that happened at this point in time. Good move getting the system checked out to be sure.

My only thought is the ECM's sensed a serious electrical problem and shutdown. But I never got trouble code on the Cummins monitoring system so that's unusual. Engines immediately started up after we reset the switches properly. I'll keep you posted.