I have the Lo-Hi pass for the rca's but I cannot figure out which wires go where so I dont know where to wire them in. I want to run them from the rear speakers, but I dont know what color goes where from the amp in the rear.

Any help or a color diagram of the speaker wire would be great.

Your going to blow up that stock system. Na, I dunno. . .

These may help. The thing is though, you want to tap into the wires before the amp, not after the amp. :Beer

that is good but shopkey has a better one, it is not bad at all. mine was done in like a day And I had to buld a box for mine 5.3CF of air for the 15in. sub. I have no trunk.
What kind of sub/subs are you putting in and what kind of amp?

I got it wired up but I think the sub is screwed. I just decided to f- it and stuck it in my sisters car instead. I ended out poppin out the rear speakers to see what color the wires are... duh.