Wiring Through Corolla Firewall

I had a similar question a while back, but for a PT Cruiser. Someone mentioned simply routing the wiring through the door opening and that is what I ended up doing because there didn't seem to be a good spot for drilling through the firewall. I brought the wires inside on the passenger side of the car. Under the hood, I used wire ties along with some sponge insulation to keep the wiring in place. There was a small gap in the metal where the hood met the fender, so that's where I tucked in the wire, holding it in place with the sponge rubber. I brought the wires inside near the bottom of the glove box and shoved the wiring behind the plastic molding where it meets the carpeting and then under the floor mat. I had just enough length in the break-away wires to reach the Brake Buddy. I ran the wiring inside the PT Cruiser in a similar fashion to the back end for the magnetic-mount tail lights. I still need to make a couple of steel brackets for the magnets to lock on to.

Before settling on this route, I figured it would be easier to drill from the exterior of the car into the interior as I would be less likely to hit something in the engine compartment.