Back Turn Signals and Brake lights will not work

The back turn signals do not flash at all. The front signals work fine. Flipping the hazards switch turns the front signal lights on, but not the back.
The left and right brake lights do not come on when depressing the brake pedal, but the third brake light in the middle does come on.

When turning on the headlights, all bulbs will light up on the back, so all of them are getting power and are good. I've checked all of the fuses visually, and all seem to be fine.

I've replaced the multi-function lever on the steering wheel column and it did not fix the problem.
I've replaced the flasher relay located above the brake pedal and it did not fix the problem. I admit, I may not have replaced it with the right relay, but at the same time; It did not seem to make anything else inoperable that wasn't already so.

I'm worried that I will have to tear the entire car apart in search of a shorted wire somewhere. That wouldn't be the worse thing possible, except I work a full 40 hours every week and have 3 kids and this thing has to be fixed by the 7th this thursday per the repair order I was issued.