Chewed up wires.

Thanks to Elektroingenieur, we have this wiki page with a lot of information about the Toyota service info:

Toyota Service Information and Where To Find It | PriusChat

If you scan down to where it talks about the Electrical Wiring Diagram (EWD), you'll see there is a convenient link there to something called the Wire Harness Repair Manual.

Unlike the real EWD for the car, the Wire Harness Repair Manual is kind of dated and won't have all the details for a specific year and model of car. But it's right there for the clicking, and will have the basic information on how you can repair that sort of damage and do so up to Toyota's standards.

You might still need specific terminal part numbers for your car, which you can get by looking in the EWD for your model and year on your own, or by letting someone at your dealer's parts window look them up for you.

 

That looks like it's going to be a mudder to work on.......especially if the rat chewed them right at the connector plug.

The great thing about Gen 2s in a salvage yard is that the ABS modules disappear quickly. That means someone else has already removed the big stuff and you should have easy access to grab a whole connector and several inches of the harness. Then you could perhaps remove the wires you need and splice them to your harness. Would give you some practice at how to remove the pins before you risk wrecking the connector on your car.

 

The wire harness repair manual goes into the dark secrets of pin removal.

Last year I even grabbed a random cotter pin from my junk drawer and dremeled it to the exact pin-release tool shape and dimensions shown in the wiring manual. I had been used to succeeding (eventually) with a jeweler's screwdriver or whatever else was at hand, but the right-shaped tool does a better job.