I have the EEC-IV on my mustang. Unlinke the OBD-II it doesn't give any information without a piggy-back system. If you search www.corral.net forums you can find this information.
I was just wondering if anyone has interfaced into a first gen ford explorer whitch is EEC IV. Would like to incoporate data acquisition into my carputer but don't know the first thing about it. Any help would be greatly appreciated.