i have a 2019 big horn yesterday when i started to un hook my trailer the front switch had my legs come down ok the i wanted to move the trailer up some nothing happen wouldn't move at all pushed the switch up and down wouldn't move at all. i hooked the truck up again for the elect and still nothing would move.so i went to plan b i hook up to the elect and it worked find. i was able to get it off the truck. i hit the levers to level the trailer worked just fine. After i level the trailer i checked the battery on the control board and it read 12.9v. so what kind of problem do i have. thanks.