help with sub install in 2001 ford focus

[wruth]

i dont really post here much, i mostly just read the good threads, but i am trying to install a sub in my gf's 2001 ford focus with a stock head unit, and i ran into some wiring problems. 1. i need to install the rca adapter, but i dont know which wires are for the left and right speakers. 2. i need to install the remote amp turn on wire which i dont know where it would go. i was wondering if anyone could help me out with this or provide a wiring diagram. its the stock cd player for a ford focus. i cant stand that she drives a ford btw.