How to ground PDC?

Cool, can you please elaborate on your sensor grounds? Bear with me, my harness (97) only has one stock eye loop to ground. Did your stock harness have more than this or did you create these extra grounds. Thanks in advance.
Sorry. Wish I could remember more about how I did the conversion wiring. It’s been 19 years since then. I tried to keep it as close to stock as possible just eliminating all unneeded wires. Mine was a 99 OBD2.