I was wondering if there is anyway to get the whole wiring harness out of the car without cutting it? I am talking about the part from where it unplugs underneath the hood to the ecu.

 

Yeah, you pull the part under the hood through the firewall.

 

But under the dash right before it goes through the firewall, all of the wires from the ecu look tangled up witht the harnes for the interior of the vehicle. I didnt look at it real good but is that easy to figure out how to untangle? Are there any wires from the ecu harnes that go to the interior of the car insted of going to the engine bay?