Some, even MOST of the 94'* have 16 pin connectors. The 94'* that have the 12 pin have no flash feature built into the PCM. Only 93 and below. Most auto parts stores will read your codes for you (free) in hopes that you buy parts from them, and you can use an OBD1 scantool on a 94/95, but you have to have the OBD2 cable. My OBD1 scantool will work for them, but I don't have the cable. Jr has the same tool, but has to have both cables to use it on both cars.
It'* really freaky.