|We need to remove and replace the OEM Engine harness with the swap kit harness for the LS motor.
Should we pull the outside wires and connectors back through the firewall into the cabin, or it there a way to finesse the ECU connector out through the firewall opening into the engine bay? The motor is out and we have plenty of space to work.
I see where some guys de-pin it; so if that's the preferred method we'll just cut at the ECU. But I'd rather not chop up the NA harness until we see where everything connects.