Hello and welcome to just answer Chrysler. Can you turn the engine over by hand?
There should be a crankshaft pulley bolt access cover that you can remove and attach a socket and long extension to in order to turn the crank. Here is a picture of that cover for you.
Ok good. Try this next; Using a good set of jumper cables, connect one clamp to the battery negative terminal, and the other end to the engine block. If it will now turn over, then you have a bad ground cable. If it still will not turn over then do the same thing with the positive cable (battery positive terminal to the large starter terminal). Be careful near the starter terminal, try not to let the clamp touch ground. If it turns over then you have a bad positive cable. Let me know how it goes,
Yes! The negative cable has too much resistance in it. Now if the problem is at the battery cable clamp, then you might just be able to replace that with an after market clamp. Also check the end where the negative cable attach's to the block. It may be loose.
Sounds like a good plan fireman! Thanks for the accept and bonus! It was a pleasure to help you with this.