I do not have a 5th wheel but battery going flat in a week with only ref on, does not seem right to me and with a 40 watt solar panel the battery should be full at the end of the week with a sunny week.
I agree 2 and 3 amp will drain the battery in a week, but there should not be more then a 1/2 amp draw and that seem way to big. Yes all the thing list above draw current but all combine should be less then 1/2 amp.
Time to go out and get a amp meter and see how much current is be used and what is using it. Let use know what you find.
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