Okay help me out. I have a 2013 f150. I connected all the required fuses required to supply power to trailer. But if my trailer battery is dead, I still don't have power to work the tongue jack. I'm forced to use a jumper box. I've been told that you should have full power from tow vehicle if connected. Am I doing something wrong? (Besides having a dead battery to begin with). I already added a battery shut off and a solar panel charger.
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