This is how I did mine.... I assume from the pictures Im pretty sure it is a 5th gen lol
If you look at the bottom of the door, there is a small hole that a wire will fit through perfect. I just ran the wires from the trunk up the side then out of the door seal and into the hole. It will appear through the speaker hole. Make sure if you try this you leave enough slack for the door to open and close but not to much so that the door will hurt the wire.... <<I made this mistake is why i say....lol
If you really wanted to you could wrap it in some plastic wire hiders but im laxy and the wires are close to the color of the car. Trust me they are UNNOTICABLE!!