Not sure if the same, but on my '96 Ram I have both the OBDII under dash and the Chrysler diagnostic connector under the hood. Most times I have to use the Chrysler connector with any decent scan tool to read powertrain values or even accurate DTCs. In my opinion, OBDII had very limited ability that year.
So a 1996 has an Chrysler style OBD-I connector under the hood by the PCM computer plus an OBD-II plug under the dash?