2010 LE Stock Radio Wiring Harness

#1
I am replacing the stock radio in my wifes 2010 LE with an aftermarket double DIN unit from Pioneer. I pulled the stock radio and it has a total of (4) wiring harnesses going into the back of it. The first two contain all of the power and speaker wires that I need to connect my new Pioneer. All of the wiring harnesses that I can find online connect to these first two factory harnesses. My question is, what are the second two harnesses? I cant be the first person who has ever run into this.
 
Top