Quote:
Originally Posted by flybouy
If the trailer's battery is dead and defective, then the battery won't charge or operate any dc connected device. Buy an inexpensive VOM and learn how to use it as it will help you in the future as well. If that's beyond your comfort level then pull the battery and take it to most any place that sells batteries and have it tested. Every time a lead acid battery is totally discharged damage is done.
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Would a dead battery create the issue with the battery disconnect switch? Would that explain why I'm able to use the lights when it's plugged into a house outlet but once that's unplugged nothing works.