I am replacing the plug wires in my 1990 F150 5.0 XLT. I searched for plug wires and found With EEC IV or Without EEC IV. I did a search, and I've found info telling me about Ford's Electronic Engine Control, and they may or may not have used it in my 1990 model year, but I can't find anywhere how to determine if I have EEC or not?


Thanks,
Scott