odometer dies

My odometer from my 1998 Explorer just stop working but the speedometer and all other gauges are working find. Would you know if there is a fuse for the odometer. I do not think it is anything form the bottom of the transmission because my speedometer is working find.
Also,
My A/C only cools on A/C Max. If I move it to A/C or any of the other selections hot air comes out, I think the vent door is not operating right.