97 jeep spedometer. odometer, air bag light. problem

I have a 1997 jeep cherokee. When I am driving my spedometer and odometer go haywire. They will stuck at zero then jump to where they should be then back to zero. The air bag light comes on also when this is happening. It comes and goes throughout the drive. Recently all the gages have began acting up also. Fuel gage, oil gage. ITS DRIVIN ME NUTS! Any help would be apprectiated.