Re: car is running really ruff smells like gas to HELP!
It is possible the harness you bought as a replacement have crossed wires if all you did was switch to the new one and the car ran fine before. It could be injector wire signals were crossed.
I would try another harness. Most jumper harness are not color coded so unless you know what you are doing, it would be a headache to trace the wires to the pinouts.
How bad is the broken wire in the old harness btw. It might be an easy fix. Post a pic