This is my first post on this site hope it it fits in. I have a 2005 Expadition Sport with about 650 miles on it. I say about 650 cause my speedo stopped working this weekend on a trip in northen ME. It is a 550f non electric start. All elce seems to be good. When I start the sled up the speedo dose its start up thing lighting up and showing all warning lights and high beam light. then I see the needle move slightly and the display reads SCALE. The speedo will not show anything wile moving but SCALE, Also the high beam indicator light is not working. The back up indicator is working. I have looked for loose connections and have found none. Can anyone point me in the right direction.