Thanks, was looking at this and how it resets and I saw a yellow flag tucked up. Interesting that its 50 amp and coach is rated at 30 amp.
Buss Marine Grade Heavy Duty Manual Reset 50 amp DC Circuit Breaker Fuse #25450
Was not tripped but the 15 amp red wire and 3 amp yellow wire were. Not sure what they control.
Stange also that with the battery switch off both batteries were charging while driving.
Thought that when off it took the batteries out.
Still looking into why both fuses blew.