Is there any particular reason you need to plug it into a GFI circuit?
And, if it's a GFI circuit, what's it capable of providing, amperage-wise? It's possible that since it's a new rig, the battery is charging full. With taht going on, plus the other 12V items being fed from the battery/convert power, it might just be too much of a load for a mere 15 or 20 amp circuit.
Steve
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