Can't figure this out, please, help. My truck turns on and runs.. But non of my gauges are working on the dash. The odometer window says no bus. Any one have this happen?

I had this same problem a long time ago. It said no bus on the odometer. Turned out to be a loose connection under the dash. I wish I remembered more about which one it was exactly.

Check the CCD BUS voltage. It should be 2.49 and 2.51 at the OBDII port. http://articles.mopar1973man.com/general-cummins/34-engine-system/81-ccd-data-bus

I will just say from my experience with this....get yourself several cans of electronic cleaner spray, computer air cans, dialectric grease, and a truck load of patience!!!!! Check out my posts on here about the saga! Still No Gauges. Follow what these guys on here tell you to the letter, and you will find your way thru it! Good Luck!!!