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I was researching a error code today and discovered cracked insulation on several wires.
How hard is it to replace the harness and how much does one cost?
It is not real hard to replace the wires, I have pulled the pin form the harness at the ECM plug and ran a new wire to my O2 and too a few other areas.
I finally got fed up with wiring issues and sent the harness to www.jimsperformance.com and he replaced all faulty wires, replaced cracked conenctors , re-wrapped the harness and eliminated wires that I was not using, due to my 85 to 86 ECM swap, then did a full diagnostic on it for $150