No power on battery
Hi, I have a 2011 forestriver freedom 1640ltd and know nothing about wiring, so please forgive any errors in terminology. Box is a wf-8712-p. I've just replaced the CO/LP detector. Everything works on shore power, but nothing works on the battery. All the grounds were jumbled together in a large blue wirenut, including a thick white wire that has a warning label about reverse polarity will damage a diode in the battery charger. All fuses are good, including the one outside by the tongue. We're getting proper voltage at the box on battery, but nothing works (water pump, lights, alarm). Also, the large white wire with all the other grounds will be negative when on shore power, but when we switch to battery is suddenly shows the same voltage as the battery. It comes out of the box with all the other hot wires.
So, my questions:
1. Why isn't anything working on battery?
2. What is that large white wire and why is it hot on battery power? And why is it jumbled up with the grounds?
Thanks everyone!
Amy
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