[john79sc]

I am installing a 1980 engine into a 1979 sc. The engine came with a wiring harness and an ecm. While I was tearing down the engine, in order to replace the broken head studs, I decided to completely rebuild the engine. Now, I am getting ready to install the engine in the car and I need to run the harness for the O2 sensor control unit.

What I'd like to know is how the sub harness for the ecm is routed into the cabin under the passenger seat. Is there a separate hole or is it routed with the main harness through the tunnel? Any help would be appreciated.