My sympathies, I've had much the same trouble only many times more. Squirrels have disabled my F150 three times, my AC on my Hyundai, and some wiring on my tractor. Overall I'd say they've cost me over $1500 in the last 2 years.
My wife and I just finished installing a 2 acre invisible fence so the dog can roam the area around the vehicles. I've tried everything to keep those devils at bay short of a new garage which I refuse to do because of tax implications.
Good luck, they'll probably be back.
Kevin