Sometimes when the battery goes dead, the speedo needle goes all the way around and gets stuck on the stop pin.
Try unhooking the battery and reconnecting it. It may reset itself.
If not, you would have to manually rotate the needle around. Sometimes a blast of compressed air will nudge the needle back around-counter clockwise.
2005 Gulf Stream Conquest 31ft
BigFoot Levelers,TST in tire TPMS,Bilstein Shocks,Trans temp guage,Lowrace iWAY