My 2018 CRV began behaving strangely yesterday. When i pushed the Start button, all kinds of flashing lights came from the dash and the engine wouldn’t turn over. Right away I think flat battery. Also when I push the Start button, i get kickback from the brake pedal. Never had that before. So, i tried to jump it and as soon as the last terminal was touched, the horn stated blasting. Then I removed the cables altogether and attached the boosters to the terminals for about 45 minutes. When I reattached the cables, the horn started up again. What can I do to reattach cables and not have my ears shredded? Thank you for suggestions.