wiring expedition to amp

Hello, Im new to the forums. I have a 2003 Ford Expedition Eddie Bauer.

I have 2 12'subs, and a 1000w amp. I have the amp all wired to the subs, and to the pos. of my battery, and i have it grounded. I have ran an audio wire from the amp under the carpet through the dash up to behind the stock ford radio/cd changer.

Now my truck already has an amp and 8inch sub. There is a clip in back of the radio/cd changer. There are four wires coming out of it, These four go back to the amp in the trunk. The kit I have, ran 4 wires up. So the number of wires is right. Am I doing everything right so far? Hope so.

So the four wires coming out, i want to tap so they go to my amp too.

I dont know what wires to connect.

Heres a pic of the wires coming out. They are deffinatley the bass:

the four wires coming up from the amp are actually 2 wires. They go into the "Audio In" Section of the amp. inside these wires are two wires wrapped around each other. one has a white and black, the other a gray and black.

[IMG]https://i41.tinypic.com/285tuc.jpg[/IMG]

^ What I have.

[IMG]https://i43.tinypic.com/16h14s8.jpg[/IMG]

^^ The two i ran up, cut open acutally four.

[IMG]https://i39.tinypic.com/21mdfec.jpg[/IMG]

^^^ My amp

ohh, i see. well the RCAs came with the kit i got on sale, so i figured id make them work. I just need to figure out what to connect these to.

Im not even sure if this amp will work.