There WAS at least one black wire associated with the knock sensor when I found it in the wiring schematics, but I didn't find any additional wires associated with the knock sensor that were red. That's not saying there isn't a red wire associated with the knock sensor, just that in my searching I didn't see one.
Maybe it runs somewhere else completely though? What are the chances that the little culprit found it somewhere else, got it chewed through where it originally was, then decided to take the loose end down under the intake manifold for later snacking?
Sorry I wasn't able to help more. I'm not sure, but I think my car cover may be frozen in place at this point, so even getting the hood up for a look might turn out to be an entirely separate ordeal.![]()