While my 2007 Rav 4 4cy was sitting idle so I could pass it down to my son, a family of rats moved in and chewed up a wiring harness on the drivers side, along with a lot of the firewall insulation from the interior of the hood panel. Can anyone tell me what parts I need to buy? One end looked straightforward, but the other end looks like it goes to the instrument panel and steering wheel. I'm handy, but no expert, and I wonder if this can be handled DIY style. I've fixed some above average issues on lots of vehicles following youtube videos and willing to give it a shot. Thanks! Photos attached...