Welcome to the forum its a great place to get your questions answered. First I would ensure your batteries are fully charged then look for a resettable fuse somewhere along the frame rail from the batteries to the slide and reset it if popped.
Jake my sidekick (yellow Lab)
2017 RAM 2500 CC 4X4 Cummins Diesel
2016 Flagstaff 26 FKWS
AF&AM & El Korah Shrine of Idaho