pcm diagrams

[tonyjklh]

i am putting a 94 explorer engine into my 90 ranger, my ranger already has a 4.0 in it but its almost dead now. what i need is to see the differances in the pcm pin-out so i can add the wires into my existing harness for the egr and second oxygen sensor. if anyone has the diagrams that would be great. im assuming they harnesses are pretty similer and i will only need some minor modifications to my harness/pcm connector.
thanks

 

[holyford86]

you don't need to, it will run fine without hooking them up. your '90 computer won't see the other o2 sensor or egr system