I don't have a lighted sign, just a regular one, but I came home to find it laying on the ground. I guess the wind blew it off. I got rid of the "s" hooks and secured it with key ring circles...the kind you have to work the key around several loops. I got them at the automotive checkout at WalMart.
As for the lighted signs, they would have to be wired into photo sensor just like the existing light at the top of the pole.
