Wiring issue

[86chevysky]

OK it starts off i let my ol lady drive my truck, it was right after a big snow storm. She was with her friend, took a stop light a little fast hit some sand and the tail slide out and she slit and hit a snow embankment broke the steering column in the truck it turns to the left fine, but it has like 5in of play to the right. That's not the problem. The problem is when she hit that embankment the battery cam off the tray and hit the fan and baaam! battery acid everywhere! ruined all the chrome bla bla bla. Well about 2 months later I'm having issues with the wiring the running lights wont go off, as soon as i turn the truck on the windshield wipers come on and wont go off, door locks lock and unlock themselves. and i just want to know is it hard to just rewire everything or what? not exactly sure how to attack this on? thanks for your time and future help.