I don't want to ruin it for 1337ssei, so I'll at least let him show you the pictures I've taken. I used this:
The B11 and B12 lines were cut out of the picture, and someone responded with how difficult it is to read it. I agree that this is a nightmare, but it'* not that bad. When left in, the stock amp had oscillating bass volume, so it basically didn't work out. Plus, there'* really no need to amp speakers with it if you're using a good head unit.
Wires go out of the head unit for front & rear speakers, left and right. That'* eight wires (+ -, + -, + -, + -) that go into the amp. Then, the amp "amplifies" the sound and pushes it through eight more wires. This is the mess that goes into the stock Bose amp, as well as some power wires, a couple grounds, a wire that turns on the amp when the head unit comes on, and perhaps something else I've missed.
I bypassed this and will soon do the writeup. But at least I have these good news so far. Has anyone here stayed away from replacing the head unit for this reason?