Ok so I was having a problem with my 550 going in and out of 4x4. So i cleaned some plugs and it was fine. I went to start it to put it in the garage and nothing. Turn the key and no display, cant start, no lights. Checked fuses by the battery, charge of the battery, and some connections and still nothing. Put the battery over night on trickle and still nothing. Also, my winch works fine. PLease help.