It's my understanding that pre-1996 are OBD1. His description of his ADL connector sounds like an OBD2. Is it an OBD1 or 2? Will an OBD2 scan tool read his ECM?

EDIT: Is the following true? "The 94's and 95's use an OBD1 protocol. If you have a check engine light, there is a simple way of reading it. You need a piece of wire about 2 ft long. Stick one end in the OBD2 port terminal that is closest to the engine bay and the center console and ground the other end to a bolt. Turn the key to the on position and the check engine light will flash the fault code with long blinks being the 10's digit and short blinks being the 1's digit. So, 4 long blinks and 3 short blinks would be 43.

This only works on 94-95 models"