Ok here it is down and dirty. There are three wires(black, orange and blue) going into the switch beside the sub and two wires(orange and black) leading out. On the side with the two wires, splice into the Orange wire and connect it to a + power source. I hooked mine to the red wire powering the trunk light bulb. Maybe one day I will do a nice write up.

 

wha??? Sub amp doesn't work? or woofer doesn't work? More detailed instructions and to fix what problem?