Update:
To answer a few questions, the 96 Dakota has the plug for the scanner under the dash, I did not look to see if there was a connecter under the hood. It is OBD2.
I got 3 codes:
P1765 Relay control
P0711 Fluid temp sensor
P0748 Governor pressure solenoid circuit.
According to google, all could have been tripped by low fluid, guess that makes sense, I ran it out of ATF-4 the day the cooler line blew off.
We have reset the computer and I will drive the truck a couple days and we will see what comes back, we will address what we have then, unless you guys have a better plan. Gene