I have a 08 lancer GTS. I bought the car used and it has the RF package but no stock sub. I looked under the driver seat and the amp is still there. And in trunk where the stock sub would be it looks like someone cut 4 wires(blue, green, yellow, and red) Im not sure if they have anything to do with the stereo or not. But doesn anyone know how hard it would be to put a OEM sub in my car? and does anyone know what them wires could be? Ill post a picture later.

Thanks for any help

 

Here is a pictures of the wires. sorry its a bad picture. If a better picture would help just let me know.