Pressure washed under hood. Now have electrical problem. on 2007 Jeep Wrangler

15 minutes after washing, the horn started to beep occasionally. Then more prolonged along with lights & wipers, even windshield washers. Now they won't shut off. Disconnected battery. Left it overnight and problem remains. Blew out electtrical union boxes with airline, problem persists.

Asked by for the 2007 Jeep Wrangler