adgivan

My 78 Z idels rough, dies, and backfires. I have been checking the fuel delivery parts. When i checked the wiring harness from inside the car I didn't get a reading on the air flow meter. I removed the air flow meter and checked it i did get a reading. I am going to double check from inside as soon as it cools off. (temp. outside) If it turns out to be the harness where can i get a good harness. If my problem can be caused by something else please let me know. (New fuel pump, filter, cold start valvue)