Electric issues

[Napadude]

Hi i put on a blinker kit a light bar then the dealer put a winch on . I have noticed now the some times when I start it up none of them work. If I shut it off and some times it will work. I even noticed the USB port dont work right either. Iam thinking a ground but I have checked them all. Also any ideas on putting a extra fuse block in for the accessories?.