Ok EFI needs O2 sensors. That clearly didn’t register in my head until I said it out loud
As far as the check engine light goes; I can’t keep what I don’t have. My current harness wont work with the old gauges. That’s why I need the wiring help. Im pretty sure I read that you have to solder a new pin for the check engine light but boooo that’s out of my wheelhouse. As of right now there is no check engine light.
