i have a 1999 ram 3500 cummins turbo diesel and my guages are not working and it says "no bus". i did the test and they do have power as the dials move when the test is done but nothing else happens. what could my issue be? ive checked all fuses and even swapped the cluster from another truck.

 

Not to worry you, but the only time I've read about "No Bus" in posts is when the pcm needed replacement. Does the truck run and drive?