I'm in the middle of changing out all of the Clarion/Rockford crap out of my 03 and I have a few questions. And yes I searched and searched.

1) Does anybody know which wires on the two amp connections I need to splice together in order to bypass the factory amp?

2)There is also one additional plug that I don't remember on my 2K Xterra. There are 2 wires hooked to it and they are yellow/red and yellow black. If you were to look at the back of the Rockfor deck, they are plugged into the lower left corner of the deck. Are they possibly the steering wheel audio controls?

3)Which 2 wires out of the 4 available from the stock subwoofer/3-4 inch small speaker do I use for a 6x9 speaker.
The four wires available are blk/wht, blue, blu/yel and green.

Some help if anybody is able to offer is much appreciated. Wise ass cracks need not respond.
Thanks!!!