There are two "entirely different" power systems in all travel trailers. When plugged into shower power, the "conventional electrical outlets" (like the ones in your home) are powered to provide 120VAC. When you are unplugged from shore power, those outlets are "dead" and do not provide power.
The 12VDC system (battery power) provides power to the lights, some "cigarette lighter type" outlets, the radio, furnace fan, refrigerator ignition/monitoring system and to the water heater ignition system. The battery/12VDC power source does not provide any power to the "household outlets" in the trailer and there is no 120VAC capability when not connected to shore power.
Shore power can be provided by a "household outlet", a "campground pedestal", a "generator" or an "inverter". Shore power is not provided by a battery and the two systems are independent of each other.
So, based on your description, if you are not plugged into shore power, none of the outlets have power to them. This is normal.
Is that what you're describing? If it is, then your system is operating properly. Each of the fuse LED indicators "should light" if the fuse is pulled, but if you pull the fuse that powers the panel, then none of the LED indicators will illuminate. Pulling ALL of the fuses, most likely, disables the "LED indicator system" so your observation that some don't light, may be normal as well, if you've pulled the fuse that powers the "WFCO power center"....
I'm unsure of what you're asking, but if you plug your trailer into shore power and the outlets work, and if you pull each fuse "one at a time" and the LED indicators illuminate, then the system is working normally.
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John
2015 F250 6.7l 4x4
2014 Cougar X Lite 27RKS
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