[sourdough]

I would leave those batteries disconnected and pull open everything you turned on or switched to see if anything was melted, burned or opened up when it was hit with the 24v. I would pull the light fixtures etc. then connect the batteries and start reconnecting one at a time to make sure nothing is shorted. Isolate each item one at a time or you will just have to start undoing one at a time after something causes it to fail upon hookup. I wouldn't be surprised if the awning motor and converter aren't toast as well.