Cams fixed
Here is an update and the fix.
Turns out the rear camera was working, it was just whited out. Finally found the fuses and they were all good. We decided to "reboot" the display unit (integrated pioneer system with radio/DVD/Camera/etc). To reboot we had to cut all power, so we shut off the short power breaker at the pole and placed the battery in storage. That cut all power to the RV. Put the batter back in use. When the Pioneer system rebooted, everything was working 100%.
Our best guess is that somehow the camera was in a night visions (infrared mode) and was being whited out by the daylight.
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