2005 BMW 325i

so like the title says, thats what I have to work on tomorrow. Just a high level input to sub amp install. Just wondering if anyone has the speaker wire colors and locations to tap into the rear speakers and ignition on this thing. I have yet to see it so I dont know if there is an amp in the back that needs to be tapped into or if I have to use the wires strait out the back of the deck. I can figure all this out if I have to that day, but if anyone has any info before hand it is gonna make my job easier and being that I am in command start season already I dont wanna spend any more time than i have to on something so trivial. Thanks alot guysdouble-secret reverse-osmosis speaker-cone-induced high-level interference distortion, Its a killer

thank you for the wiring colors, are those behind the deck?double-secret reverse-osmosis speaker-cone-induced high-level interference distortion, Its a killer