my running a b18c1 and i need to get my obd2a p72 ecu to work but it wont fire up with the harness. But when i use obd1 ecu it fires up meaning that the conversion harness has a problem.

Is there anything on the harness i can check out or mod to get it working, fuel pumping thats for sure.

Need to get it fixed up asap

Thank you in advanced