I have seen a previous thread that said I need to get part number MB363Z/A Airport WIFI Extreme Wireless Upgrade Kit as I dont have wi-Fi , upon reading the installation instructions it states that you will find a black wire running from the bluetooth card to under the motherboard where you will find three thin black wires marked 1, 2 ,3, I cannot see these wires are they located behind the motherboard and if so how do I get to them ?