Ignition help needed (stumped)
I'm going to say this.
A. it would be best if you stopped poking holes in the insulation. Better at this point to disconnect the battery and use a continuity or resistance between connectors. If that's not an option, OK, just be careful.
This could be a grommet for main power.
If so, the car ahas the option 65 amp wiring.
If the sheet metal cuts through the insulation and causes a major spark show it won't be good.