I'm not sure if this has been discussed I did a search.So while I'm coming down the interstate headed home my headlights and high beams come on all of a sudden,when I get home and pull in my horn starts blowing and stays on I pull in the parking spot it stops,when I take the key out and pop the hood the horn comes on and stay on.Only other things I noticed my turn signals didn't work I can't even troubleshoot due to the blasted horn.Has anyone had this happen before?