Ok, I just changed the ecu in my car back to a p72. I originally had a p28 ecu w/ an obd2 to obd1 conversion harness. So when I put the p72 back in, it gave me an engine checklight code 54 CKF - crank fluctuation sensor. I know that the p28 doesn't mean the sensor hooked up so where exactly is this sensor so I can hook it back up? Can anybody take pics to show me?