2000 dodge ram 1500 engine shuts down while driving

Your battery ground (black) wire probably goes to the side of your engine block. You probably have another ground (black) wire going to your chassis (frame). You also probably have more than one ground point inside or near you dash- these grounds probably have multiple ground wires attached to a single eyelet. Your PCM ground wires are multiple wires attached to an eyelet and are usually located on the firewall in engine compartment. Most grounds are held in place by a bolt or similar threaded fastener. Ground straps (woven) sometimes have just clips that attach to thin wheel wells, etc.... All of that being said, it's best to remove the grounds, clean up the contact areas with emry cloth, sandpaper, etc. to create a clean mating surface, then apply small amount of oxy-guard or dielectric grease on the cleaned surface and then tighten the wires back up. On another note- have you disconnected your PCM wiring harnesses and inspected the male pins and female sockets for any bent pins or pushed in sockets?

Another thing that is easy to do is check for a short that may be affecting your DLC Bus wires. To do this, find out which PCM wire harness the DLC wires run to and disconnect it at the PCM. Next, get a test light and attach the alligator clip to the Battery (+) post red wire on the battery. You may need to run an extended wire from the test light wire to reach the Battery (+) post. After attaching the test light, simply probe the Bus wires at the DLC connection. If the test light illuminates, that tells you there is a short somewhere on that wire and you can either do a continuity (leap frog) test to determine the location of the area effected or just spice into the bad wire and run a new wire. Do you have a multimeter and/or a test light? As far a wiring diagrams go- Mitchell1 has a plan- I think I pay around $29/year and you have access to all the diagrams which in my opinion are good wiring diagrams. They are black/white diagrams, but are good.