O2 harness install fail

Ordered replacement O2 harness from lmr. Got excited. Forgot to repin one of the wires (different on 90 compared to 91-93). Plugged in, started up. Obnoxiously high idle and engine light on. Remembered. Shut down, re-pinned, smooth idle, engine light on.

Tried running codes, when scanner is plugged in engine continuously revs. Took scan tool off, runs fine.

Did I fry short-circuit my ECU? If so, who makes a good replacement. Currently have a a9l, friend said I should run a9p.

Needing a second opinion.

Mustang5L5 said:

Harness repin should match the ECU you are using. What transmission is in the car and what did it originally come with from the factory?

You can open the ECU and check the pin 46 trace and see if it's burned up. If it's not you should be good to go

Click to expand...

It's a a9l with a factory 5-speed.
Took pic of computer.
The other photos are from the instructions via the harness manufacturer.