Have been checking other posts for this issue, but no luck. Recently took my batteries out for storage and charging. When I re-installed the batteries my front landing gears will not work off battery power? If I hook up the truck power cord to bumper, they work fine. I'm guessing the 30amp fuse is blown in the switch line, but why does it work when hooked up to the truck?? Thanks for any insight since electricity and me are not a good mix. Hoping to check that 30amp fuse this week as we are heading out this next weekend.