Re: 04 Crescendo 8386 New Owner with Questions!
There should be a compartment with all the fuses, usually it is the very first compartment on the drivers side. Check the fuses and also check the white ground wires in that compartment. I had one on my coach that had pulled out of the eye and was not noticeable until I touched it, then I saw it had gotten disconnected. For me it was the air conditioner and wipers that were not working.
On the speedometer lights you might also check the rheostat dimmer switch. Maybe somebody turned the lights off because driving at night some do not like lights glaring back at them. Just a guess, but you might check that.