Of all the projects I've done on the 4Runner, this one taught me an important lesson: If a wire has to pass through the liftgate, you're going to earn it.

The goal was simple enough: install a backup camera

Getting access to the liftgate was easy. I removed the interior plastic trim panel followed by the metal access cover, exposing the inside of the hatch. Since I wanted the installation to look as factory as possible, I chose to mount the camera in the trim surrounding the license plate.

After removing the driver's side license plate light, I found a path into the liftgate by following the factory wiring. A coat hanger made quick work of fishing the camera cable through the opening and into the hatch. At that point I was feeling pretty good, then I had to get the wire from the liftgate into the vehicle.

That's where the fun stopped.

The rubber boot connecting the liftgate to the cargo area is one of those places that looks simple until you actually try to run a wire through it. Space is extremely limited, the angles are awkward, and I'm convinced Toyota hid several razor blades back there just to keep things interesting. After removing the boot, I fed the cable through the liftgate and into one side of the rubber sleeve. A small opening in the boot gave the wire enough room to pass through. Armed with a coat hanger, dish soap, and more patience than I thought I possessed, I eventually managed to pull the cable through and into the cargo area.

Victory.

At least partial victory. Once inside the vehicle, the video cable was easy. I simply followed the factory wiring harness all the way to the front of the truck and routed it to the head unit. The power wiring required a different approach. Since the supplied power and ground wires weren't long enough to follow the same route, I routed them directly to the driver's side taillight. After verifying the correct reverse light wire with a multimeter, I tied the camera power into the circuit and grounded it using a nearby 10mm bolt. With the wiring complete, all that remained was connecting everything to the head unit.

While the radio bezel was already apart, I decided to take care of another item on the list. The factory cigarette lighter was replaced with a dual USB outlet that would handle charging duties and Android Auto connectivity. A little time with the Dremel was required to enlarge the opening, and while everything was apart I refreshed the metal trim with a fresh coat of black paint. Once everything was reassembled, it was finally time to test the camera.

Success.

The image quality was good, the camera activated correctly, and backing up suddenly became much easier.

The only thing I wasn't completely sold on was the placement. The camera sits slightly off-center due to the mounting options available, and a small portion of the license plate is visible in the image. I spent some time trying to eliminate it, but every adjustment that removed the plate also made the viewing angle worse. In the end, I decided it was a compromise worth making.