Basic battery question
Just bought a 2009 2720 and it only has one barely working group 31 deep cycle battery and an empty spot where battery #2 goes .
Problem-. Nothing except for electric tongue jack works on battery power, no lights or fans. Electric 30amp works fine.
Next? Not sure what these wires are for but looks like I need a 2nd battery and/or need to redo all connections to get lights and fans to work on battery?
Any YouTube video that would guide a newbie on what to do next?
Thanks
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