2014 expedition el limited factory sub wiring issue

[crlattimer]

I have a 2014 expedition el limited with factory subwoofer. I'm attempting to use a line output converter to wire in an aftermarket sub. I can't seem to find the correct wiring diagram with wire colors so I know what wires to tap in to. Can anyone help or tell me which wires are which?

 

[GAINMOB]

yeah this has been done before...when i did it in my 04...i tapped into the +/- wires leading to the sub...then continued with install...should be the same across the board...you can look my name up and i believe i have some photos on it...if not search rear subwoofer...it has been talked about across several generations and its all the same

 

[GAINMOB]

GO BLUE!!!