After much thought and research, I am happy to say I was able to successfully install a back-up camera thanks to ADExternal's tutorial! Thanks so much!!
Some issues I ran into: running the pins into the connector was very challenging. I accidentally broke on of them into the connector and literally had to hack it out with a saw.
Also, after connecting everything together and putting everything back, all of a sudden my car went bonkers and thought all the electronic systems (ABS, power steering, TCS, etc.) had failed! But everything was working fine actually, and after driving around a bit those very concerning-looking errors went away.