· Super Moderator
Moved to "General Technical Chat". Check the connector to see if it might be damaged. Also get a multi-meter and see if there is any voltage going to it.
Are you talking about the main harness for the engine? That's what comes to my mind when you say large connector with a lot of wires.It was a larger black connector with more wires in it. I followed the o2 wires up beyond the four pin connector to its next junction at the larger plug.