Electrical Wiring harnesses different in auto vs manual trans cars?

Without knowing the year of the car, we can’t confirm.

Also, there’s no reason to swap ecus. They are virtually the same. I was part of a thread years back where someone dissected the code and discovered very little is different in terms of engine tune.

Main difference is start circuit routing which is why the loop must be chNged

I’ve run into this when I converted my auto to a stick and left the auto ECU. There is no NGS on the auto trans harness so the ECU always thinks it’s loading up against a stall converter.

I finally converted to the a9L by repinning the o2 harness and added the trans harness with the NGS plug. The car ran beautifully after the swap. Never better

There are 4 different o2 sensor pinouts and some of the info on the internet is incorrect, so I would double check that.

The trans harness is the main harness that runs from driver's kick panel over to the trans tunnel. Under the car, 3 pigtails come out of the trans tunney. The VSS, the NGS and the reverse lights. The auto harnesses are missing the plug for the NGS. This plug is wired in parallel with the NGS plug on the clutch pedal