On a 9550 sidehill had it out of shed a week ago and everything was fine. Did a little cleaning up on it and put it away. Got it out today and corner post is blank for 40 sec. and than everything turns on by this every thing in the corner post every line or number gauge on all three screens. After 1 min. the throttle doesn't work it goes back and idles. If you cycle the ignition switch same thing all over. Everything else works, just wondering if anybody knows where to start. I was going to check the grounds and if anybody knows where they all are. I know theirs 2 or 3 in engine compartment and 1 under cab I think.