Ground to what..??

Questioning your wiring harness, that double wire ground should be on the other side of the radiator support.

There should be a hole in the radiator support right in front of the battery. It's a ground.
I ended up removing harness from one of the "holders" on the firewall... It reaches the bolt on core support now between rad and battery.. but now I'm worried about it being on the wrong side..?? This harness does not look at all like it's been modified... completely original as far as I can tell.