2010 ram 3500 electrical problem

The only direction to point you in is to someone with diagnostic equipment including a Digital voltmeter - ohmmeter, and relevant workshop manuals and wiring diagrams for reference. You have tested these "new" batteries to see that they sustain a load and have a good state of charge? It all sounds like low voltage to me. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops