Used Prius with disconnected front Turn Signals help.

So I have been working on this Prius and the final steps needed for it being road ready are the Front Turn Signals. Ill upload photos below.

The main question id have, beyond why in the hell did someone do this, would be how are the signals color coded? I bought a replacement connector with wiring, and just want to make sure I connect the negatives and positives correctly.

The headlights themselves work great, the taillights and back Turn Signals work and I get noise inside the car when I press the headlights. Anything else I need to particularly worry about before plugging everything together for testing? Should I disconnect the 12v for this? I just finished my OBD2 scanner checks for emissions, would be a shame to have to drive another 150 miles.

Edit: The first picture is showing the harness containing the wires for the Blinkers (My finger is pointing towards it) and the second is just showing that both sockets are completely empty with no connectors attached.

 

Lol unfortunately not. Ive looked everywhere for anything else. I cant see anything else that isnt connected beyond my signal/park light and that harness holding wires. Seems to be the ticket, but like you said, kind of ridiculous.

Only other info I can give is there are 2 black/white striped wires and 2 that are One Yellow and One Reddish Brown on the Left Side and on the Right Side there are 2 black/white striped wires and 2 that are One Green and One Reddish Brown.

If I had to guess id assume the Yellow and Green are the signals one of the Black/White striped wires is the ground and the Red/Brown is the Parking Light. Its just their are 2 Black/White striped and I suppose a ground is a ground, but, im not sure if you need the correct ground. If so I suppose a coin flip is what i'll be doing.

 

So I ended up buying 2 replacement connectors off Amazon. Its a simple enough part so ill hope for the best. The only odd thing is both the wires on this connector are red. I have no idea which one is positive or negative. Is there any world where it doesn't matter which one connects to which?

Its also still weird that there are 2 Black/White ground wires. Most things im reading say there should only be 3 Wires. Ground, Turn Signal, and Parking/Side Light. So why do I have 4 Wires?

Idk, getting a little more nervous about this.

Heres the link to the Connector I bought if you want to take a look

 

We can label this one as solved boys. The process was actually super simple. Didn't matter how we plugged up the signal, as long as the signal and a ground went into the connectors wires. Finally have my Prius in tip top shape and it passed the inspection!

Yay!