So I have a 2001 Honda Accord V6. An animal climbed into my engine compartment when I was on vacation and made itself a nest. While doing so, it chewed through a few wires. The wires sit behind the driver-side strut tower and are part of the mass of wires that come out of the firewall. How do I go about replacing these wires/wire harness?

I included two photos, one showing a piece of one of the severed wires, and the other showing the location where the wires were chewed through (you can even see part of the severed green wire).

 

The green/red wire (green color wire with red stripe running through it) looks to be the positive wire for the brake fluid level switch. It runs through the firewall to Connector C302, terminal no. 3.

You can splice a new wire in between the green/red wire coming from Connector C302 to the green/red wire at the brake fluid level switch.

You may want to use a multi-meter to test for continuity on the green/red wire between Connector C302 terminal no. 3 to where it breaks off to make sure that is the correct wire.