2006 DYNASTY ACTI Dash Gauges messed up. Warning lights abound. J1939 Issues? Gauges just cycling and sweeping and lights everywhere. RUNS FINE! HELP!

[MyronTruex]

Just another thought. The gauges going through what appears to be a restart constantly, that is, a systems check I wonder if the input voltage is sinking as they try  to fire up. A digital voltmeter would not likely show you this.

Something taking a bit of a load at startup can sink the voltage to the point where things just want to start over. 

Perhaps finding the input voltage line to the gauges and substituting your own power, or use a 12 volt test light that has a bulb inside. Not one of the newer ones with electronics inside them. The light should stay bright as the gauges go through startup.

The ground side can cause the same issue but a voltmeter grounded from a fresh scratch somewhere or a long run of wire to the batteries can reveal an issue on the ground side if voltage shows up on that side of the gauges.