Len.Barron
Observer
The image size for your diagram is really small so I had a hard time seeing the details, but, it looks like you are staying with a single alternator rather than using the factory optional parts to run dual alternators (ambulance spec); this would make the separation of systems much cleaner/simpler and eliminate the use of an isolator completely.I thought I would post the planned wiring diagram for the FEV VAN. There are some limitations to the software I used to create the diagram so no throwing rocks at my diagram.