This is a 1991/1993 22RE swapped into my 1978 pickup, It used to work a couple years ago when I divorced the body harness from the engine harness and I finally got around to installing it this year. I am at the final stretch of the project and just finished up the exhaust, went to check for 02 codes and stuck with a solid CEL shorted or not.

I would love a diagnostic port wiring pin out to check it all. Somewhere mentioned grounding W but do not see a W in there,

Please advise,
Dan